WO2014152166A1 - Harnais de tête rapide à endosser - Google Patents

Harnais de tête rapide à endosser Download PDF

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Publication number
WO2014152166A1
WO2014152166A1 PCT/US2014/027026 US2014027026W WO2014152166A1 WO 2014152166 A1 WO2014152166 A1 WO 2014152166A1 US 2014027026 W US2014027026 W US 2014027026W WO 2014152166 A1 WO2014152166 A1 WO 2014152166A1
Authority
WO
WIPO (PCT)
Prior art keywords
head
restraining straps
tightening cord
head harness
user
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2014/027026
Other languages
English (en)
Inventor
Daniel Charles SYMONS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scott Technologies Inc
Original Assignee
Scott Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scott Technologies Inc filed Critical Scott Technologies Inc
Publication of WO2014152166A1 publication Critical patent/WO2014152166A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/084—Means for fastening gas-masks to heads or helmets

Definitions

  • the subject matter described and/or illustrated herein relates generally to head harnesses, and more particularly, to head harnesses for respiratory protection face pieces.
  • head harness for respiratory protection face pieces employ the tightening of multiple straps of the head harness system to affect a seal of a face piece seal to a face of a user. Tightening multiple straps can be time consuming and undesirable when trying to respond quickly to a situation. It is desirable that the user could quickly tighten the face piece through the use of a single motion.
  • a head harness includes a plurality of restraining straps configured to removably secure a face shield to a head of the user.
  • the restraining straps extend from the face shield to the back of the user's head.
  • Each of the restraining straps have a first end and a second end. The first end is attached to the face shield. The second end extends to the back of the user's head and partially backtracks to the first end to form a strap loop.
  • the strap loop defines an opening therein.
  • the head harness also includes a tightening cord. A portion of the tightening cord passes through the openings of each of the restraining straps. The portion defines a loop length.
  • the tightening cord is configured to impart movement of the restraining straps based on the loop length such that the restraining straps contract radially inward as the loop length is reduced.
  • the head harness further comprises a head harness carrier configured to engage a portion of the restraining straps at the second end.
  • the head harness may include a tightened configuration wherein the loop length of the tightening cord is reduced to reduce a strap length between the head harness carrier and the face shield, and a loosened configuration wherein the loop length is increased to elongate the strap length between the head harness carrier and the face shield.
  • the restraining straps cause the face shield to create a uniform pressure seal with the user's face when the head harness is in the tightened
  • the head harness carrier comprises a non-rigid structure.
  • the tightening cord includes a first end and a second end.
  • the first end is secured to a head harness carrier.
  • the second end has a pull-tab secured thereto.
  • the pull-tab is configured to be grasped by the user.
  • the tightening cord may extend through an orifice providing a friction fit to maintain the loop length of the tightening cord.
  • the head harness further compromises a center lever coupled to the tightening cord.
  • the center lever is configured to change the loop length.
  • the first and second ends of the restraining straps define a strap length therebetween.
  • the strap length is adjustable based on the loop length.
  • the tightening cord is configured to concurrently adjust a length of each of the restraining straps.
  • a facemask respirator includes a face shield configured to at least partially cover a portion of a face of a user.
  • the facemask respirator also include a plurality of restraining straps configured to removably secure the face shield to a head of a user.
  • the restraining straps extend from the face shield to a back of the user's head.
  • the restraining straps each have a first end and a second end. The first end is attached to the face shield. The second end terminates at the back of the user's head. The second end at least partially backtracks toward the first end forming a strap loop defining an opening therein.
  • the facemask respirator includes a head harness carrier configured to engage a portion of the restraining straps at the second end.
  • the facemask respirator also includes a tightening cord. A portion of the tightening cord passes through the openings of each of the restraining straps.
  • the tightening cord defines a loop length through the openings.
  • the tightening cord is configured to impart movement of the restraining straps based on the loop length such that restraining straps contract radially inward as the loop length is reduced.
  • the head harness carrier is shaped to conform to the shape of a head of the user.
  • the head harness may include a tightened configuration wherein the loop length of the tightening cord is reduced to reduce a strap length between the head harness carrier and the face shield, and a loosened configuration wherein the loop length is increased to elongate the strap length between the head harness carrier and the face shield.
  • the restraining straps cause the face shield to create a uniform pressure seal with the user's face when the head harness is in the tightened configuration.
  • the head harness carrier comprises a non-rigid structure.
  • the tightening cord includes a first end and a second end.
  • the first end is secured to a head harness carrier.
  • the second end has a pull-tab secured thereto.
  • the pull-tab is configured to be grasped by the user.
  • the tightening cord may extend through an orifice providing a friction fit to maintain the loop length of the tightening cord.
  • the head harness further compromises a center lever coupled to the tightening cord.
  • the center lever is configured to change the loop length.
  • the first and second ends of the restraining straps define a strap length therebetween.
  • the strap length is adjustable based on the loop length.
  • the tightening cord is configured to concurrently adjust a length of each of the restraining straps.
  • Figure 1 A is an illustration of a front perspective view of a facemask respirator formed in accordance with an embodiment.
  • Figure IB is an illustration of a side perspective view of a facemask respirator formed in accordance with an embodiment.
  • Figure 2 is an illustration of a back perspective view of a loosened head harness of a facemask respirator formed in accordance with an embodiment.
  • Figure 3 is an illustration of a back perspective view of a tightened head harness of a facemask respirator formed in accordance with an embodiment.
  • the subject matter described herein includes a head harness for a full facemask respirator that tightens quickly using a single action or motion to tighten a plurality of restraining straps that are connected to the facemask respirator.
  • the subject matter described herein employs the use of a cord to feed through each restraining strap of the harness to simultaneously pull each of the restraining straps tight using a single motion. This allows a user wearing the facemask respirator to quickly tighten the harness using one motion. As such, this speeds the donning time from having to adjust several straps individually.
  • Figure 1 A is an illustration of a front perspective view of a facemask respirator
  • the facemask respirator 100 for protecting a user from environmental elements.
  • First responders, firefighters, rescue workers, and/or others working in environments where contaminants may be present may wear the facemask respirator 100.
  • a user may don the facemask respirator 100 to protect at least a portion of a face 101 of the user's head 103 from physical debris and/or to provide breathable air.
  • the facemask respirator 100 may be used for any of a number of applications, such as self- contained breathing apparatus (SCBA) applications, air purification respirator (APR)
  • the facemask respirator 100 provides a seal with the user's face
  • the facemask respirator 100 includes a face shield 102 configured to cover at least a portion of the user's face 101.
  • the face shield 102 holds a lens 104 and an air-purifying cartridge 106.
  • the face shield 102 may also be referred to as a "facepiece" herein.
  • the facemask respirator 100 is configured to be secured to the user's head 103 by a head harness 108 (also shown in Figure IB) having a plurality of restraining straps 1 and a tightening cord 2 (shown in Figure IB) such that the facemask respirator 100 may be quickly and removably secured to the user's head 103 using one motion by pulling the tightening cord 2.
  • the facemask respirator 100 may be tightened or loosed using one-handed operation.
  • the facemask respirator 100 may be adapted to provide breathing gas to the user and/or to filter breathing air for the user, which includes air that has been filtered or otherwise treated so that airborne contaminants are removed therefrom.
  • the facemask respirator 100 includes the air purifying cartridge 106 to serve as a respirator, however, the facemask respirator 100 may alternatively include attachments for hoses for delivering breathable gas from a gas cylinder (not shown), as well as adapters to accept hoses, filters and/or regulators specific to particular duties or to be used in particular environments.
  • the facemask respirator 100 may cover the eyes, nose and mouth of the user for protecting the user from airborne contaminants.
  • the facemask respirator 100 is shown as a full facemask (e.g., constructed to cover the eyes as well as the mouth and nose), however, in other embodiments, other configurations are possible.
  • the facemask respirator 100 may be a half facemask (e.g., constructed to cover the mouth and nose but not the eyes) or a quarter mask (e.g., constructed to cover the nose and mouth but not extend under the chin), or the mask may be another type of face covering.
  • Figure IB is an illustration of a side perspective view of the facemask respirator
  • the facemask respirator 100 includes the head harness 108 having the plurality of restraining straps 1 configured to removably secure the face shield 102 to the user's head 103.
  • the head harness 108 includes two restraining straps 1 on each side of the head 103, but the head harness 108 may include any number of restraining straps 1.
  • the head harness 108 may include three, four, or five restraining straps 1 that at least partially extend around the head 103.
  • one of the restraining straps 1 extends above an ear of the user, while another restraining strap 1 extends below the ear of the user, and yet another restraining strap 1 extends over the top of the head 103.
  • the restraining straps 1 extend from the face shield 102 to the back of the head 103.
  • the restraining straps 1 each have a first end 1 10 attached to the face shield 102, and a second end 1 12, or endpoint, which terminates at the back of the user's head 103.
  • the restraining straps 1 have a body 1 14 extending from the first end 110 to the second end 112. The first end 1 10 is attached to a portion the face shield 102.
  • buckles 1 16 are used to secure the first end 1 10 to the face shield 102, however, in other embodiments, other fastening means may be used. For example, ladder style clips, clasps, buckles, fasteners (e.g., Velcro) or the like may be used.
  • the second end 1 12 at least partially backtracks towards the first end 1 10 forming a loop defining an opening 1 18 therein.
  • a portion of the restraining strap 1 may be folded at the second end 1 12.
  • the restraining straps 1 may be made of any flexible material, such as a plastic material (e.g., nylon).
  • the head harness 108 may include a head harness carrier 4 configured to engage a portion of the restraining straps 1 at the second end 112.
  • the head harness carrier 4 may be referred to herein as the "carrier” or “harness carrier.”
  • the carrier 4 includes a plurality of ladder locks 120 configured to movably hold each of the restraining straps 1 such that the restraining straps 1 can move relative to the ladder lock 120, but the restraining straps 1 cannot be removed from the carrier 4.
  • the second end 112 of one of the restraining straps 1 may be threaded through, or enter, a first slit 122 in the ladder lock 120.
  • the restraining strap 1 may then exit out of a second slit 124 and wrap around or backtrack toward the first end 1 10.
  • the first end 110 and the second end 1 12 of the restraining straps define a strap length L of the body 1 14.
  • the strap length L may be a distance between the face shield 102 and the carrier 4.
  • the strap length L may be adjusted by backtracking more of the body 1 14 at the second end 1 12.
  • the strap length L may be based on a loop length as described below.
  • the carrier 4 may be configured to protect the user's head 103 from the restraining straps 1 and/or the tightening cord 2.
  • the carrier 4 may be positioned between the straps 1 and the user's head 103 to prevent movement of the restraining straps 1 from interfering with the user's head 103 (e.g., entangling the restraining straps 1 with hair and/or pinching skin on the back of the head 103).
  • the carrier 4 may be made of a non-rigid, deformable material, such as a plastic material.
  • the carrier 4 may be shaped to conform to the contour of the user's head 103.
  • the carrier 4 may be concave or bowl-shaped to fit on the back of the head 103.
  • the head harness 108 includes a loosened configuration, or expanded state, for loading operation. In the loosened configuration, the strap length L between the head harness carrier 4 and the face shield 102 is elongated, or increased.
  • the head harness 108 also includes a tightened configuration, or contracted state. In the tightened configuration, the strap length L is reduced, or decreased.
  • the user dons the head harness 108 in the loosened configuration. Once situated on the user's head 103, the user pulls the tightening cord 2 to enter the tightened configuration to secure the head harness 108 to the user's head 103.
  • FIG. 2 is an illustration of a back perspective view of the head harness 108 in the loosened configuration.
  • the tightening cord 2 includes a first end 126 and a second end 128.
  • the first end 126 is be securely fixed to the carrier 4 such that the first end 126 is restricted to the carrier 4.
  • the first end 126 is secured to the carrier 4 by extending through a first orifice 130 (e.g., a hole) in the carrier 4.
  • the first end 126 is then secured (e.g., tied in a knot) to prevent the tightening cord 2 becoming released from the carrier 4.
  • the second end 128 may be unconstrained such that the second end 128 is free to move.
  • the carrier 4 may include a second orifice 132 configured to retain the tightening cord 2 proximate to the second end 128 to the carrier 4.
  • the second orifice 132 may be a channel or a groove in which the tightening cord 132 lies.
  • the second end 128 may include fixtures attached thereto that are configured to allow the user to quickly grasp the tightening cord 2.
  • the tightening cord 2 loops to and through each of the openings 118 of the restraining straps 1.
  • the tightening cord 2 is configured to impart movement of the restraining straps 1.
  • the tightening cord 2 allows the restraining straps 1 to pull out further from the carrier 4 allowing the head harness 108 to be quickly donned on the user.
  • the strap length L (shown in Figure 1 B) is elongated or increased when the loop length is increased.
  • the strap length L, or distance between the harness carrier 4 and the face piece, is selectively chosen (e.g., maximized) when the tightening cord 2 is in relaxed.
  • the strap length L is shortened when the tightening cord is pulled and the loop length is shortened.
  • the tightening cord 2 pulls all of the restraining straps 1 together closer to one another causing the face shield 102 to from a seal against the face 101 of the user. In this manner, the tightening cord 2 provides a single tightening point to simultaneously tighten each of the restraining straps 1.
  • a portion of the tightening cord 2 defines the loop length.
  • the loop length may be the amount of tightening cord 2 that travels through each of openings 118 of the restraining straps 1.
  • the loop length may govern the movement of the tightening straps 1.
  • the tightening cord 2 may form a round loop held in a circular or semi-circular shape. However, in other embodiments, other shapes may be used that variously surround a center.
  • the loop has a first diameter Dl when in the tightening cord 2 is loose. Pulling on the tightening cord 2 changes the loop length, and the first diameter Dl, to impart movement of the restraining straps 1 such that restraining straps contract radially inward as the loop length is reduced.
  • the size, or circumference, of the loop varies as the as the loop length varies.
  • tightening cord 2 causes the loop to have a shorter loop length in the tightened configuration (shown in Figure 2) as compared to the loosen configuration.
  • the tightening straps 1 move axially along the body 1 14 such that the second ends 112 of each restraining straps 1 move toward one another when the loop length is caused to be shortened.
  • the loop length is reduced to reduce strap length L (shown in Figure IB) and draw the carrier 4 closer to the face shield 102 (shown in Figures 1A and IB).
  • the loop length is increased to elongate or increase the strap length L.
  • the tightening cord 2 may be substantially captured by the carrier 4.
  • the first end 126 may be secured to the carrier 4 by the first orifice 130.
  • the second end 128 may be captured by the second orifice 132 such that the tightening cord 2 may not extend further into the openings 118. In other words, the second orifice 132 limits the loop length.
  • the second orifice 132 may provide a friction fit with the tightening cord 2 to maintain the loop length of the tightening cord 2.
  • the tightening cord 2 may include another retaining member in addition to, or in place of, the second orifice 132 to adjust and/or maintain the loop length.
  • the retaining member may include, but is not limited to, a cord lock, buckle, ladder clip and/or the like.
  • FIG 3 is an illustration of a back perspective view of the head harness 108 in the tightened configuration.
  • the tightening cord 2 is pulled in Ihe direction P such that the loop length has been reduced to cause the restraining straps 1 to be drawn close to one another.
  • the restraining straps 1 contract or move radially inward in the direction Q.
  • the loop has a second diameter D2 that is smaller than the first diameter Dl shown in Figure 2.
  • the tightening cord 2 extends to and through each of the openings 118 of the restraining straps 1.
  • tightening the tightening cord 2 imparts concurrent movement of each of the restraining straps 1 such that the second ends 112 of each of the restraining straps 1 move toward one another substantially in unison.
  • the restraining straps 1 causes the face shield 102 to be secured to the user's head 103 and create a uniform pressure seal with the user's face 101 (shown in Figure 1 A) when the head harness 108 is in the tightened configuration.
  • the single tightening cord 2 allows quick tightening and loosening of the head harness 108 so that the use may quickly don the facemask respirator 100.
  • Seal of the face shield 102 against the face 101 may be desirable (e.g., to keep harmful elements in the environment out of the facemask respirator 100). Comfort in the fit of the facemask respirator 100 to the face 101 also may also affect fit factor. For example, if one or more of the restraining straps 1 move relatively more than another, uneven wear may result on one or more locations on the face shield 102 resulting in discomfort. Additionally, the user may improperly don and tighten the facemask respirator 100 in an attempt to avoid such discomfort. By concurrently tightening each of the restraining straps 1, (e.g., shortening the strap length) such uneven wear and discomfort may be avoided.
  • the tightening cord 2 may include fixtures attached thereto that are configured to allow the user to quickly grasp the tightening cord 2. Once grasped, the tightening cord 2 allows head harness 108 to be tightened using a single motion (e.g., a pulling motion). The user may pull the fixture to change the loop length.
  • the tightening cord 2 includes a pull tab 3 configured to be quickly grasped by the user.
  • the pull tab 3 is securely affixed to the tightening cord 2 proximate to the second end 128. As shown, the pull tab 3 is securely fixed to the tightening cord 2 by extending through an opening in the pull tab 3.
  • any means may be used to secure the tightening cord 2 to the pull tab 3, such as, a knot, a fastener, an adhesive, and/or the like.
  • the pull tab 3 may be sized and shaped to allow the user to pull or tightening cord 2 using one-handed operation.
  • the pull tab 3 is sized and shaped to be grasped by a finger, however, the pull tab 3 may be any shape and shape.
  • the pull tab 3 may be a handle, a dowel, or the like.
  • the head harness 108 may include a center lever 134 coupled to the tightening cord 2.
  • the center lever 134 may be referred to herein as an "over center cam lever.”
  • the center lever 134 is configured to change the loop length to tighten or loosen the tightening cord 2.
  • the center lever 134 is flipped up, the loop length of the tightening cord 2 reduces. Flipping the center lever 134 pulls the restraining straps 1 and translates to a force acting upon the face shield 102 or a face seal.
  • the center lever 134 is fixed to the carrier 4 at a proximal end using a threaded fastener 136 (e.g., a screw).
  • the center lever 134 may be fixed to the carrier 4 using any securing means, such as an adhesive.
  • the center lever 134 includes a finger grip 138 at a distal end.
  • the finger grip 138 is configured to receive the finger of the user to allow the user to quickly grasp and pull the center lever 134.
  • the center lever 134 may be actuated in either -direction R to tighten the tightening cord 2.
  • the tightening cord 2 may be threaded through a ratcheting mechanism 140 in the center lever 134 to allow the tightening cord 2 to remain substantially tightened when the center lever 134 is actuated.
  • the ratcheting mechanism 140 may be configured to allow the tightening cord 2 to travel only in one direction.
  • the center lever 134 may include a release mechanism (not shown) to allow the tightening cord 2 to relax.
  • the head harness 108 may be use any means to tighten or loosen the tightening cord 2.
  • the head harness 108 may use any means to encourage the head harness 108 to remain in the tightened or loosened configuration.
  • the tightening cord 2 may include a cord lock (not shown) having an engagement member (not shown) that is selectively engageable with the tightening cord 2 to clamp the cord lock to the tightening cord 2 and thereby maintain a position of the cord lock along the tightening cord 2 (thereby maintaining the tightness of the tightening cord 2).
  • the restraining straps 1 and/or the tightening cord 2 may be elastic to facilitate maintaining a tightened configuration.
  • the head harness 108 includes the restraining straps 1 and the tightening cord 2 in the embodiments described herein, the head harness 108 may include any suitable structure, mechanism , means, and/or the like that enables the head harness 108 to be tightened and loosened using a single cord engagement mechanism.
  • a single pull cord, an over center cam lever, a neckband and ratchet assembly for adjusting the loop length, a buckle, and/or the like may be used.
  • a technical effect of embodiments described herein is a respirator that can be donned using a single motion.
  • the above description is intended to be illustrative, and not restrictive.
  • the above-described embodiments (and/or aspects thereof) may be used in combination with each other.
  • many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope.
  • the dimensions, types of materials and coatings described herein are intended to define the parameters of the invention, they are by no means limiting and are exemplary embodiments. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un harnais de tête pour fixer un masque protecteur au visage d'un utilisateur. Le harnais de tête comprend une pluralité de sangles de retenue configurées pour fixer un masque protecteur à la tête d'un utilisateur. Les sangles de retenue s'étendent du masque protecteur jusqu'à l'arrière de la tête de l'utilisateur. Chacune des sangles de retenue a une première extrémité et une seconde extrémité. La première extrémité est fixée au masque protecteur. La seconde extrémité s'étend à l'arrière de la tête de l'utilisateur et revient partiellement vers la première extrémité pour former une boucle de sangle. La boucle de sangle définit une ouverture. Le harnais de tête comprend également un cordon de serrage. Une partie du cordon de serrage passe à travers les ouvertures de chacune des sangles de retenue. Le cordon de serrage définit une longueur de boucle à travers les ouvertures. Le cordon de serrage est configuré pour conférer un mouvement des sangles de retenue sur la base de la longueur de boucle de telle sorte que les sangles de retenue entrent en contact radialement vers l'intérieur lorsque la longueur de boucle est réduite.
PCT/US2014/027026 2013-03-14 2014-03-14 Harnais de tête rapide à endosser Ceased WO2014152166A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361783366P 2013-03-14 2013-03-14
US61/783,366 2013-03-14

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WO2014152166A1 true WO2014152166A1 (fr) 2014-09-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016112434A1 (fr) * 2015-01-14 2016-07-21 Paftec Technologies Pty Ltd Appareil respiratoire
CN114831767A (zh) * 2022-04-20 2022-08-02 苏州宣嘉光电科技有限公司 光照射近视模型构建专用小鼠头套及其实验操作方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955217A (en) * 1972-11-13 1976-05-11 Levy David H Permanently knotted necktie and method of making same
US4408403A (en) * 1980-08-11 1983-10-11 Hans Martin Sports shoe or boot
US5069205A (en) * 1990-04-20 1991-12-03 Figgie International, Inc. Quick-donning head harness assembly
US5313671A (en) * 1993-04-15 1994-05-24 Flory, Inc. Swim goggles
US6536435B1 (en) * 1999-02-22 2003-03-25 Cabot Safety Intermediate Corporation Respirator headpiece and release mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955217A (en) * 1972-11-13 1976-05-11 Levy David H Permanently knotted necktie and method of making same
US4408403A (en) * 1980-08-11 1983-10-11 Hans Martin Sports shoe or boot
US5069205A (en) * 1990-04-20 1991-12-03 Figgie International, Inc. Quick-donning head harness assembly
US5313671A (en) * 1993-04-15 1994-05-24 Flory, Inc. Swim goggles
US6536435B1 (en) * 1999-02-22 2003-03-25 Cabot Safety Intermediate Corporation Respirator headpiece and release mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016112434A1 (fr) * 2015-01-14 2016-07-21 Paftec Technologies Pty Ltd Appareil respiratoire
CN107405509A (zh) * 2015-01-14 2017-11-28 Paf泰克科技私人有限公司 呼吸装置
CN114831767A (zh) * 2022-04-20 2022-08-02 苏州宣嘉光电科技有限公司 光照射近视模型构建专用小鼠头套及其实验操作方法

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