CN112169171B - Orthotopic implantation of bionic anal sphincter system based on functional reconstruction of defecation - Google Patents

Abstract

A bionic anal sphincter system implanted in situ based on functional reconstruction of defecation, including: artificial anal sphincter module, sensor detection and conversion module, pelvic nerve stimulation module, external control module and external energy supply module, wherein: artificial anal sphincter module The pressure signal obtained in the body is transmitted to the sensing detection and conversion module to generate an electrical stimulation intensity signal, and the pelvic nerve stimulation module generates a corresponding intensity stimulation electrical signal to stimulate the pelvic nerve. The external energy supply module is connected to the artificial anal sphincter module and To provide energy for it, the external control module is connected with the artificial anal sphincter module for the wearer to control defecation by himself. The invention has man-machine interface and control functions, detects the amount of feces in the rectum or anal canal through the sensor detection and conversion module, and constructs an electrical signal of corresponding intensity based on the detection information to stimulate the pelvic nerve to activate the wearer's whole body. Defecation reflex neural pathways, so as to truly form the functional reconstruction of the perception of defecation.

Description

Orthotopic implantation of bionic anal sphincter system based on functional reconstruction of defecation

technical field

The invention relates to a technology in the field of medical devices, in particular to an in situ implanted bionic anal sphincter system based on reconstruction of defecation function.

Background technique

Fecal incontinence is often caused by sphincter or nerve damage. It is one of the common geriatric diseases in clinical practice. It refers to the loss of the ability of the human body to control the excretion of feces. Influence. The artificial anal sphincter is implanted into the end of the human rectum to replace the anal sphincter to achieve the function of defecation control. In the normal human defecation mechanism, intestinal contents gradually accumulate and expand the intestinal wall to stimulate the intramural sensor to generate an impulse, thereby generating the desire to defecate through the defecation reflex. The formation of the desire to defecate requires the participation of the nervous system. The pelvic nerve in the nervous system is the relay between the peripheral receptors and the defecation center in the defecation reflex pathway, the outgoing and incoming nerve electrical signals, and clearly indicates whether the human body needs to defecate and whether the defecation is complete. The existing artificial anal sphincter system is an externally controlled mechanical device. Although it can sense the amount of feces in the rectum or anal canal through the sensing module, it does not have an interface for interaction with living organisms, and does not really form and reconstruct the function of defecation , it is difficult to make the patient himself feel comfortable.

Contents of the invention

The present invention aims at the defect that the existing sphincter system lacks a physiological interface for human body interaction, and the human body cannot truly produce the desire to defecate without the participation of the nervous system, and proposes an in situ implanted bionic anal sphincter system based on the reconstruction of the defecation function, which has a humanized man-machine Interface and control function, through the sensor detection and conversion module to detect the amount of feces in the rectum or anal canal, and based on the detection information to construct an electrical signal of corresponding intensity, stimulate the pelvic nerve through nerve stimulation electrodes to activate the wearer's entire defecation Reflex neural pathways, so as to realize the functional reconstruction of defecation.

The present invention is achieved through the following technical solutions:

The invention relates to a bionic anal sphincter system implanted in situ based on functional reconstruction of defecation, including: artificial anal sphincter module, sensor detection and conversion module, pelvic nerve stimulation module, external control module and external energy supply module, wherein: artificial The anal sphincter module transmits the pressure signal obtained in the body to the sensing detection and conversion module to generate electrical stimulation intensity signals, and then generates stimulation electrical signals of corresponding intensity through the pelvic nerve stimulation module to stimulate the pelvic nerves. The external energy supply module and the artificial anal sphincter The module is connected to provide energy for it, and the external control module is connected to the artificial anal sphincter module for the wearer to control defecation by himself.

The artificial anal sphincter module is set on the rectum or anal canal, and includes: an actuator, a drive and control mechanism, a power management mechanism connected in sequence, and an energy receiving mechanism in the body and a wireless communication mechanism in the body, wherein: the actuator clamps the rectum or The anal canal forms an anorectal angle, the internal energy receiving mechanism is connected with the external energy supply module, and the internal wireless communication mechanism is connected with the external control module to receive defecation signals.

The actuator is a closed three-ring structure, including: three operating arms and two rotating shafts from top to bottom, wherein: the first operating arm and the third operating arm are arranged in the same direction and one end is fixed on the first rotating shaft Above, the second operating arm is set opposite to the other operating arms and one end is fixed on the second rotating shaft.

The sensing detection and conversion module includes: a plurality of pressure sensors, a pressure information processor and a stimulus electrical signal strength encoder, wherein: the pressure sensor is arranged on the axial and radial directions of the actuator, and the pressure information processor and the pressure sensor connected to convert the output pressure signal into a digital pressure signal and obtain the characteristic parameters representing the amount of feces in the rectum or anal canal; Electrical stimulation intensity signal.

technical effect

Compared with the prior art, the unique man-machine interface and control function of the present invention, based on the detection information of the amount of feces in the rectum or anal canal, constructs electrical signals of corresponding strength to stimulate the pelvic nerves, and can stimulate the pelvic nerves in the rectum or anal canal of patients with fecal incontinence. The bionic anal sphincter system is implanted in situ in the anal canal to replace the dysfunctional sphincter for defecation control and defecation, and can activate the neural pathways of neurogenic patients to activate the wearer's entire defecation reflex neural pathway, so as to truly form the sensory function of defecation reconstruction.

Description of drawings

Fig. 1 is the schematic diagram of the principle of the present embodiment;

Fig. 2 is the application schematic diagram of this embodiment;

Fig. 3 is the structural representation of executive mechanism;

In the figure: artificial anal sphincter module 1, sensing detection and conversion module 2, pelvic nerve stimulation module 3, external control module 4, external energy supply module 5, actuator 6, driving and control mechanism 7, power management mechanism 8, and internal Energy receiving mechanism 9, internal wireless communication mechanism 10, first operating arm to third operating arm 11-13, pressure sensor 14, pressure information processor 15, stimulation electrical signal strength encoder 16, installation position 17, wireless energy transmission control Device 18, transmitting coil 19, receiving coil 20, pelvic nerve 21.

Detailed ways

As shown in Figure 1, this embodiment includes: artificial anal sphincter module 1, sensing detection and conversion module 2, pelvic nerve stimulation module 3, external control module 4 and external energy supply module 5, wherein: artificial anal sphincter module 1 will The pressure signal obtained in the body is transmitted to the sensing detection and conversion module 2 to generate an electrical stimulation intensity signal, and the pelvic nerve stimulation module 3 generates a corresponding intensity stimulation electrical signal to activate the defecation reflex nerve pathway. The external energy supply module 5 and the artificial anus The sphincter module 1 is connected to provide energy for it, and the external control module 4 is connected to the artificial anal sphincter module 5 for the wearer to defecate by controlling the artificial anal sphincter module 1 .

The artificial anal sphincter module 1 is set in the rectum or anal canal, and includes: an actuator 6, a drive and control mechanism 7, a power management mechanism 8, an energy receiving mechanism 9 in the body and a wireless communication mechanism 10 in the body, wherein: the actuator 6, The drive and control mechanism 7 is connected to the power management mechanism 8 in sequence, the internal energy receiving mechanism 9 is connected to the external energy supply module 5 to receive energy, and the internal wireless communication mechanism 10 is connected to the external control module 4 to receive defecation signals.

As shown in Figure 3, the actuator 6 is a closed three-ring structure, including: three operating arms 11-13 and two rotating shafts from top to bottom, wherein: the first operating arm 11 and the third operating arm 13 are arranged in the same direction and one end is fixed on the first rotating shaft, and the second operating arm 12 is arranged in a different direction from the remaining operating arms and one end is fixed on the second rotating shaft.

The actuator 6 adopts silicone gel or medical silicone mold to achieve flexible clamping and has good biocompatibility to ensure the safety of blood supply.

The implanted part of the artificial anal sphincter module 1 is made of medical titanium alloy and medical PEEK polymer material, and the specific processing technology is 3D electron beam fusion printing technology and porous structure, and its surface modification and activation treatment adopts plasma spraying technology.

The sensing detection and conversion module 2 includes: a plurality of pressure sensors 14, a pressure information processor 15 and a stimulus electrical signal strength encoder 16, wherein: the pressure sensors 14 are arranged on the axial and radial directions of the actuator 6, and the pressure The information processor 15 is connected with the pressure sensor 14 to convert the output pressure signal into a digital pressure signal and obtain the characteristic parameters representing the amount of feces in the rectum or anal canal, and the electrical signal strength encoder 16 is connected with the pressure information processor 15, After the pressure information processor acquires the characteristic parameters representing the amount of feces in the rectum or anal canal, the electrical stimulation signal intensity encoder constructs the corresponding electrical stimulation intensity signal from the characteristic parameters of the feces amount, and performs electrical stimulation on the pelvic nerve through the pelvic nerve stimulation module. In order to activate the wearer's entire defecation reflex nerve pathway, so as to realize the reconstruction of defecation function.

The pressure sensor 14 includes: a silicone gel conduction medium and a pressure sensor die with a silicone membrane, wherein: the silicone gel conduction medium is used to conduct intestinal pressure, and the silicone mold is attached to the outside of the pressure sensor die and connected to the rectum Or direct contact with the anal canal.

As shown in FIG. 2 , the artificial anal sphincter module 1 is wrapped around the installation position 17 , that is, located at the rectum or anal canal, and the actuator 6 is kept in a clamped state to realize defecation control. The system provides energy for the artificial anal sphincter module 1 through the wireless energy transmission of the external energy supply module 5, the wireless energy transmission controller 18 of the external energy supply module 5 is connected with the wireless energy transmission coil 19, and the receiving coil 20 of the internal energy receiving mechanism 9 is connected with the wireless energy transmission coil 19. The transmitting coil 19 is coupled. The actuator 6 of the artificial anal sphincter module 1 arranges pressure sensors 14 along the axial and radial directions to detect the amount of feces and obtain the intracavity pressure. The detection information forms an electrical signal of corresponding intensity through feature extraction, and passes through the pelvic nerve stimulation module. 3. Conduct electrical stimulation to the pelvic nerve 21 to activate the wearer's entire defecation reflex nerve pathway, thereby realizing functional reconstruction of defecation. Then the wearer decides when to defecate according to the urgency of the defecation intention through the external control module 4. Specifically, the external control module 4 is used to send a wireless communication signal to the internal wireless communication mechanism 10 to further control the artificial anal sphincter to achieve defecation. The anal sphincter returns to its clamped state.

Compared with the existing technology, this device can form nerve stimulation electrical signals of different strengths according to the pressure detection information of the amount of feces in the rectum or anal canal, and send out nerve stimulation electrodes to stimulate the pelvic nerves and activate the nerve pathway of the entire defecation reflex. Allow patients to feel the need to defecate with different degrees of urgency.

The above specific implementation can be partially adjusted in different ways by those skilled in the art without departing from the principle and purpose of the present invention. The scope of protection of the present invention is subject to the claims and is not limited by the above specific implementation. Each implementation within the scope is bound by the invention.

Claims (1)

1. A bionic anal sphincter system implanted in situ based on functional reconstruction of the bowel movement, comprising: an artificial anal sphincter module, a sensing detection and conversion module, a pelvic nerve stimulation module, an external control module and an external energy supply module, Among them: the artificial anal sphincter module transmits the pressure signal obtained in the body to the sensing detection and conversion module to generate electrical stimulation intensity signals, and generates stimulation electrical signals of corresponding intensity through the pelvic nerve stimulation module to stimulate the pelvic nerves, and the external energy supply module and The artificial anal sphincter module is connected to provide energy for it, and the external control module is connected to the artificial anal sphincter module for the wearer to control defecation by himself; The sensing detection and conversion module includes: a plurality of pressure sensors, a pressure information processor and a stimulating electric signal strength encoder, wherein: the pressure sensor is arranged on the axial and radial directions of the actuator of the artificial anal sphincter module, and the pressure information The processor is connected with the pressure sensor to convert the output pressure signal into a digital pressure signal and obtain the characteristic parameters representing the amount of feces in the rectum or anal canal. After characterizing the characteristic parameters of the amount of feces in the rectum or anal canal, the electrical stimulation signal intensity encoder constructs the corresponding electrical stimulation intensity signal from the characteristic parameters of the feces amount, and performs electrical stimulation through the pelvic nerve of the pelvic nerve stimulation module to activate the wearer's The whole defecation reflex neural pathway, so as to realize the functional reconstruction of defecation; The artificial anal sphincter module is set on the rectum or anal canal, and includes: an actuator, a drive and control mechanism, a power management mechanism connected in sequence, and an energy receiving mechanism in the body and a wireless communication mechanism in the body, wherein: the actuator clamps the rectum or The anal canal forms an anorectal angle, the internal energy receiving mechanism is connected to the external energy supply module, and the internal wireless communication mechanism is connected to the external control module to receive defecation signals; The actuator is a closed three-ring structure, including: three operating arms and two rotating shafts from top to bottom, wherein: the first operating arm and the third operating arm are arranged in the same direction and one end is fixed on the first rotating shaft , the second operating arm is set opposite to the rest of the operating arms and one end is fixed on the second rotating shaft; The pressure sensor includes: a silicone gel conduction medium and a pressure sensor bare chip with a silicone membrane, wherein: the silicone gel conduction medium is used to conduct intestinal pressure, and the silicone mold is attached to the outside of the pressure sensor bare chip and connected to the rectum or direct contact with the anal canal; The implanted part of the artificial anal sphincter module is made of medical titanium alloy and medical PEEK macromolecule material, and the specific processing technology is to use 3D electron beam fusion printing technology and porous structure, and its surface modification and activation treatment adopts plasma spraying technology; The actuator adopts silicone gel or medical silicone mold to achieve soft clamping and has good biocompatibility to ensure the safety of blood supply.

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