CN213823169U

CN213823169U - Sacral nerve stimulation electrode capable of adjusting position

Info

Publication number: CN213823169U
Application number: CN202022385890.6U
Authority: CN
Inventors: 李伟; 汤洋; 方平; 王晓彤; 李紫菲
Original assignee: SECOND HOSPITAL OF TIANJIN MEDICAL UNIVERSITY
Current assignee: SECOND HOSPITAL OF TIANJIN MEDICAL UNIVERSITY
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-07-30
Anticipated expiration: 2030-10-23

Abstract

A sacral nerve stimulation electrode with an adjustable position comprises a stimulation electrode main body and barb components, and is characterized in that the barb components at least comprise 4 groups of barb units, each barb unit at least comprises 3 barb structures, and all the barb structures are arranged at equal intervals; the tail end barb unit consists of a tail end barb structure, and a barb recovery structure is arranged on the tail end barb structure; the barb component is fixedly connected with the stimulating electrode main body. When the sacral nerve stimulation electrode is used, the sacral nerve stimulation electrode needs to be placed into the canal sheath, the canal sheath plays a guiding role, after the sacral nerve stimulation electrode reaches a target position, the canal sheath is pushed out of the sacral nerve stimulation electrode, the barb units on the sacral nerve stimulation electrode body are automatically opened, the position of the sacral nerve stimulation electrode is fixed, the barb recovery structure is arranged on the group of barb units which extend out of the canal sheath firstly, the tail end barb units can be flexibly recovered into the canal sheath, and the position of the sacral nerve stimulation electrode is adjusted.

Description

Sacral nerve stimulation electrode capable of adjusting position

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to is a sacral nerve stimulation electrode of adjustable position.

Background

Sacral nerve stimulator used in Sacral Nerve Modulation (SNM) is an active implantable medical device commonly used for treating diseases related to lower urinary tract dysfunction.

The sacral nerve stimulator comprises two components of a pulse generator and an electrode, wherein the pulse generator sends an electric pulse to the electrode and continuously applies the electric pulse to a specific sacral nerve so as to excite or inhibit a nerve channel and adjust abnormal sacral nerve reflex arcs, and then influences and adjusts the functions of sacral nerve innervated target organs such as a bladder, a urethra/anal sphincter, a pelvic floor and the like, thereby achieving the treatment effect.

The sacral nerve stimulator can be used for treating urgent micturition syndrome, urge incontinence, non-obstructive urinary retention, defecation dysfunction and the like, particularly overactive bladder, non-obstructive urinary retention, neurogenic bladder, interstitial cystitis, neurogenic intestine and the like, and is also commonly used for treating sexual dysfunction clinically.

Generally, when sacral nerve modulation is performed in some suitable patients, it is performed in two stages, i.e., two operations. The first operation can be referred to as the "experience" phase, i.e., the procedure of placement around the sacral nerve by puncture. The second operation is to place it under the skin through a small incision in the skin, which completes the sacral neuromodulation operation. In the experience period, the sacral nerve stimulation electrode needs to be implanted into the sacral 3 nerve hole, the electrode fixation is realized through four barbs on the electrode, the position of the electrode cannot be adjusted once the barbs are released, the outer sheath needs to be removed in the barb releasing process in the operation, the electrode displacement often occurs at the moment, and the electrode depth adjustment cannot be carried out due to the barb releasing, so that the operation curative effect is influenced.

The utility model provides a to above-mentioned problem, provide an adjustable position's sacral nerve stimulation electrode.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems set forth in the background, the present invention provides a position adjustable sacral nerve stimulating electrode.

Further, preferably set up 4 groups the barb unit, every barb unit preferably sets up 3 the barb structure.

Further, the barb structure is including stretching out board, fixed knot structure and connection structure, fixed knot structure and stimulation electrode main part fixed connection, and connection structure and fixed knot structure body coupling stretch out the board and rotate with connection structure and be connected. The arrangement enables the extension plate to have a rotating function, and the barb assembly and the stimulation electrode are movably connected.

Further, the fixed knot constructs for columniform fixed cylinder, and fixed cylinder cup joints in the periphery of stimulating electrode main part, the inner wall and the stimulating electrode main part fixed connection of fixed cylinder. This arrangement fixes the position of the barb structure.

Furthermore, the connecting structure comprises a connecting plate, a connecting shaft and an elastic structure, the connecting plate is arranged on the outer side wall of the fixed cylinder, the connecting shaft penetrates through the connecting plate and the bottom of the extending plate, and the extending plate rotates through the connecting shaft; one end of the elastic structure is connected with the extension plate, the other end of the elastic structure is connected with the outer side wall of the fixed cylinder, and the elastic structure enables the extension plate to be bounced off under the action of elasticity of the elastic structure. The arrangement enables the barb structure to be automatically opened to a preset degree after extending out of the tube sheath due to the elastic action of the elastic structure, and the arrangement of the connecting shaft enables the barb structure to realize the opening function.

Further, the barb structure is equidistant to be distributed at the lateral wall of a fixed section of thick bamboo.

Further, set up two the connecting plate, two connecting plates all with the lateral wall body coupling of fixed section of thick bamboo, stretch out the board setting between two connecting plates, the connecting axle gets into from one side connecting plate, stretches out from the opposite side connecting plate after passing and stretching out the board bottom. This kind of setting makes the swing joint who stretches out board and connection structure have more stability.

Further, a through hole allowing the connecting shaft to pass through is formed in the bottom of the protruding plate. This arrangement ensures that the extension plate can rotate about the connecting shaft.

Further, the both ends of connecting axle all set up the anticreep and go out board, anticreep goes out board and connecting axle body coupling, prevents deviating from the size that the size is greater than the size of connecting axle. The arrangement prevents the connecting shaft from being separated, and guarantees the firmness of the connecting structure and the extending plate.

Further, the elastic structure is provided as a spring, and the elastic force of the spring can open the extension plate to a proper degree.

Further, the barb is retrieved the structure and is included retrieving line and go-between, and the go-between setting is on terminal barb structure's the board that stretches out, go-between and stretch out a board body coupling, retrieve wherein one end and go-between fixed connection of line, the other end is doctor's operation end. During the use, after the end barb unit stretches out the tube sheath, when no tractive power acted on, the board that stretches out of end barb structure was opened automatically under the spring action of spring, when needing the adjustment electrode position, thereby the line is retrieved in then tractive makes the board return that stretches out of end barb structure get into the tube sheath, then removes electrode to suitable position again.

Further, the recovery line is made of a material which can be absorbed by a human body, and can be as follows: catgut, high molecular chemical synthetic thread, and pure natural collagen suture. After the electrode is placed into a human body, the recovery wire is degraded and absorbed, the human body does not need to be taken out, and the operation flow of a doctor is simplified.

Further, each the terminal barb all sets up barb recovery structure on the structure, sets up the hand power ring that is used for connecting each recovery line doctor operation end, and the hand power ring is connected with each recovery line one. When the recovery wire is used, the recovery wire can be controlled by pulling the hand pull ring.

Or the barb recovery structure comprises a control rod, and the control rod is detachably connected with the end barb structure. During the use, when needing to retrieve terminal barb structure to the tube-sheath in, then tractive control lever, outside stimulating electrode pushed out the tube-sheath after the stimulation electrode position was confirmed, all barb structures all released the back, broke away from control lever and terminal barb structure to take out external with control lever.

Further, one end of the control rod is provided with an external thread, a matched internal thread sleeve is arranged on the extending plate of the terminal barb structure, and the control rod is connected with the extending plate through a thread.

Furthermore, the control rod is provided with at most three circles of external threads, and the internal thread sleeve is provided with at most three circles of internal threads. The arrangement can quickly separate the control rod from the end barb structure.

Furthermore, an operating handle is arranged at the doctor operating end of the operating rod and is integrally connected with the operating rod. The arrangement is convenient for a doctor to operate by holding the control rod.

Further, the extending plates of the end barb structures are positioned at the spatial positions between the adjacent extending plates of other barb units. This arrangement provides a space for the barb retrieval structure.

Compare with prior art's sacral nerve stimulator, the technical scheme of the utility model thereby can retrieve the position of adjusting the electrode in the admission tube sheath with terminal barb unit, overcome present sacral nerve stimulator barb in case the problem that release electrode position will unable adjustment, and easy operation, low in production cost, economic environmental protection.

The utility model discloses a theory of operation does: stimulating electrode is located the tube-in-sheath, the tube-in-sheath provides the guide effect for stimulating electrode gets into the internal target location of patient, after reaching predetermined position, stimulating electrode stretches out the tube-in-sheath gradually, terminal barb structure stretches out and opens automatically under the spring action behind the tube-in-sheath, if stimulating electrode's position needs to be adjusted, then retrieve into the tube-in-sheath with terminal barb structure through barb recovery structure, then release terminal barb structure again after adjustment stimulating electrode to suitable position, progressively release the barb structure of other barb units after the electrode position is confirmed to stimulating electrode, thereby will stimulate electrode's rigidity.

Drawings

Fig. 1 is a schematic view of the overall structure of a position-adjustable sacral nerve stimulation electrode set recovery wire according to the present invention;

fig. 2 is a partially enlarged structural diagram of a recovery wire for positioning of a position-adjustable sacral nerve stimulation electrode according to the present invention;

fig. 3 is an enlarged schematic view of a barb assembly of an adjustable position sacral nerve stimulation electrode of the present invention;

fig. 4 is an enlarged schematic structural view of a position-adjustable sacral nerve stimulation electrode of the present invention with a recovery wire and an end barb structure of a connection ring;

fig. 5 is a schematic structural view of the position-adjustable sacral nerve stimulation electrode of the present invention, in which a hand pull ring is disposed at the end of the recovery wire;

fig. 6 is a schematic view of the whole structure of a position-adjustable sacral nerve stimulation electrode setting control rod according to the present invention;

fig. 7 is a schematic view of a barb assembly of an adjustable position sacral nerve stimulation electrode of the present invention;

fig. 8 is a partially enlarged structural view of a position-adjustable sacral nerve stimulation electrode setting control rod according to the present invention;

fig. 9 is an enlarged schematic structural view of a barb unit of a position adjustable sacral nerve stimulation electrode setting control rod of the present invention;

fig. 10 is an enlarged schematic view of the threaded connection between the position adjustable sacral nerve stimulation electrode joystick and the extension plate of the present invention;

fig. 11 is an enlarged view of a protrusion plate of the position adjustable sacral nerve stimulation electrode with an internal thread sleeve;

fig. 12 is an enlarged view of an externally threaded end of an adjustable sacral nerve stimulation electrode joystick of the present invention;

fig. 13 is a schematic structural view of the position-adjustable sacral nerve stimulation electrode of the present invention with an operating handle disposed on the operating rod;

in the figure, 1, a stimulation electrode body; 2. a barb assembly; 21. a barb unit; 22. a barb structure; 221. extending the plate; 222. a fixed cylinder; 223. a connecting plate; 224. a spring; 3. recovering the wire; 31. a connecting ring; 32. a hand-pulling ring; 4. a control lever; 41. an internal thread sleeve; 42. the handle is operated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the disclosure in the specification. The utility model discloses can also implement or use through other different concrete implementation manners, under the condition of conflict-free, the characteristics in following embodiment and the embodiment can make up each other, based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtained under the prerequisite of not making creative work all belong to the scope of protection of the utility model.

Example 1A position adjustable sacral nerve stimulation electrode

A sacral nerve stimulation electrode with adjustable position comprises a stimulation electrode body 1 and a barb assembly 2, and is characterized in that the barb assembly 2 at least comprises 4 groups of barb units 21, each barb unit 21 at least comprises 3 barb structures 22, and the barb structures 22 are arranged at equal intervals; the end barb unit 21 consists of an end barb structure 22, and a barb recovery structure is arranged on the end barb structure 22; the barb component 2 is fixedly connected with the stimulating electrode main body 1. During the use, need put into the canal sheath with sacral nerve stimulation electrode, the canal sheath plays the guide effect, after reaching the target position, push out the canal sheath with sacral nerve stimulation electrode, barb unit 21 on the sacral nerve stimulation electrode main part 1 is automatic to open to the position of fixed sacral nerve stimulation electrode, through set up barb recovery structure on a set of barb unit 21 that stretches out the canal sheath at first, can be in a flexible way retrieve terminal barb unit 21 to the canal sheath in, thereby the position of adjustment sacral nerve stimulation electrode.

Barb structure 22 is including stretching out board 221, fixed knot structure and connection structure, fixed knot structure and stimulation electrode main part 1 fixed connection, and connection structure and fixed knot structure body coupling stretch out board 221 and be connected with connection structure rotation. The arrangement enables the extension plate 221 to have a rotation function, and the barb assembly 2 and the stimulation electrode are movably connected.

A through hole allowing the connection shaft to pass therethrough is provided at the bottom of the protruding plate 221. This arrangement ensures that the extension plate 221 can rotate about the connecting shaft.

The both ends of connecting axle all set up the anticreep and go out board, anticreep goes out board and connecting axle body coupling, prevents deviating from the size of plate and is greater than the size of connecting axle. This arrangement prevents the connecting shaft from coming off, and ensures the firmness of the connecting structure and the extension plate 221.

The barb is retrieved the structure and is included retrieving line 3 and go-between 31, and go-between 31 sets up on terminal barb structure 22 stretches out board 221, go-between 31 with stretch out board 221 body coupling, retrieve wherein one end and go-between 31 fixed connection of line 3, the other end is doctor's operation end. When the electrode is used, after the terminal barb unit 21 extends out of the tube sheath, when no traction force acts, the extending plate 221 of the terminal barb structure 22 is automatically opened under the elastic force action of the spring 224, when the position of the electrode needs to be adjusted, the pulling recovery wire 3 enables the extending plate 221 of the terminal barb structure 22 to return to enter the tube sheath, and then the electrode is moved to a proper position.

The protruding plates 221 of the end barb structures 22 are located on the protruding plates 221 of the other barb units 21.

This arrangement provides a space for the barb retrieval structure.

Example 2A position adjustable sacral nerve stimulation electrode

Preferably 4 sets of said barb units 21 are provided, preferably 3 of said barb structures 22 per barb unit 21. This arrangement can function as a multipoint fixture.

The fixing structure is a cylindrical fixing cylinder 222, the fixing cylinder 222 is sleeved on the periphery of the stimulation electrode main body 1, and the inner wall of the fixing cylinder 222 is fixedly connected with the stimulation electrode main body 1. This arrangement fixes the position of the barb structure 22. The connecting structure comprises a connecting plate 223, a connecting shaft and an elastic structure, the connecting plate 223 is arranged on the outer side wall of the fixed cylinder 222, the connecting shaft penetrates through the connecting plate 223 and the bottom of the extending plate 221, and the extending plate 221 rotates through the connecting shaft; one end of the elastic structure is connected to the protruding plate 221, and the other end is connected to the outer sidewall of the fixed cylinder 222, and the elastic structure bounces the protruding plate 221 by its elastic force. Due to the arrangement, the barb structure 22 can be automatically opened to a preset degree after extending out of the tube sheath due to the elastic action of the elastic structure, and the barb structure 22 can be opened due to the arrangement of the connecting shaft.

The barb structures 22 are distributed on the outer side wall of the fixed barrel 222 at equal intervals.

The elastic structure is provided as a spring 224, and the elastic force of the spring 224 may open the protruding plate 221 to a suitable degree.

The recovery line 3 is made of a material which can be absorbed by human body, and can be as follows: catgut, high molecular chemical synthetic thread, and pure natural collagen suture. After the electrode is placed into a human body, the recovery wire 3 is degraded and absorbed, the human body does not need to be taken out, and the operation flow of a doctor is simplified.

Example 3A position adjustable sacral nerve stimulation electrode

Two connecting plates 223 are arranged, the two connecting plates 223 are integrally connected with the outer side wall of the fixed cylinder 222, the extending plate 221 is arranged between the two connecting plates 223, and the connecting shaft enters from the connecting plate 223 on one side and extends out from the connecting plate 223 on the other side after penetrating through the bottom of the extending plate 221. This arrangement provides greater stability to the articulation of the extension plate 221 to the attachment structure.

All set up barb on the terminal barb structure 22 and retrieve the structure, set up the hand power ring 32 that is used for connecting 3 doctor's operation ends of each recovery line, hand power ring 32 is connected with 3 each recovery lines. When in use, the recovery wire 3 can be controlled by pulling the hand pull ring 32.

Example 4A position adjustable sacral nerve stimulation electrode

The barb recovery structure includes a control rod 4, and the control rod 4 is detachably connected with the end barb structure 22. During the use, when needing to retrieve terminal barb structure 22 to the tube-sheath in, then tractive control lever 4, outside stimulating the electrode position determination after then pushing out the tube-sheath with stimulating the electrode, all barb structures 22 all released the back, break away from control lever 4 and terminal barb structure 22 to take out external with control lever 4.

One end of the control rod 4 is provided with an external thread, the extension plate 221 of the end barb structure 22 is provided with a matched internal thread sleeve 41, and the control rod 4 is connected with the extension plate 221 through a thread.

EXAMPLE 5A position-adjustable sacral nerve stimulation electrode

Three circles of external threads are arranged on the operating rod 4, and at most three circles of internal threads are arranged in the internal thread bush 41. This arrangement allows for quick disengagement of the lever 4 from the end barb structure 22.

The control rod 4 is made of hard plastics or solid metal or solid alloy materials.

An operating handle 42 is provided at the doctor operating end of the operating lever 4, and the operating handle 42 is integrally connected to the operating lever 4. The arrangement is convenient for a doctor to hold the control rod 4 for operation.

The above description of the embodiments is only intended to illustrate the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these modifications will fall within the protection scope of the claims of the present invention.

Claims

1. A sacral nerve stimulation electrode with an adjustable position comprises a stimulation electrode main body and barb components, and is characterized in that the barb components at least comprise 4 groups of barb units, each barb unit at least comprises 3 barb structures, and all the barb structures are arranged at equal intervals; the tail end barb unit consists of a tail end barb structure, and a barb recovery structure is arranged on the tail end barb structure; the barb component is fixedly connected with the stimulating electrode main body.

2. The adjustable position sacral nerve stimulation electrode as recited in claim 1, wherein 4 sets of said barb elements are provided, 3 of said barb structures being provided for each barb element.

3. The adjustable position sacral nerve stimulation electrode as recited in claim 2, wherein said barb structure comprises an extension plate, a fixation structure and a connection structure, the fixation structure being fixedly connected to the stimulation electrode body, the connection structure being integrally connected to the fixation structure, the extension plate being rotatably connected to the connection structure.

4. The adjustable position sacral nerve stimulation electrode as recited in claim 3, wherein the fixation structure is a cylindrical fixation cylinder that is sleeved around the periphery of the stimulation electrode body, and an inner wall of the fixation cylinder is fixedly connected to the stimulation electrode body.

5. The adjustable position sacral nerve stimulation electrode as recited in claim 4, wherein said connecting structure comprises a connecting plate, a connecting shaft and a resilient structure, said connecting plate being disposed on an outer sidewall of the stationary cylinder, the connecting shaft extending through a bottom of the connecting plate and a bottom of the extension plate, the extension plate being rotatable via the connecting shaft; one end of the elastic structure is connected with the extension plate, the other end of the elastic structure is connected with the outer side wall of the fixed cylinder, and the elastic structure enables the extension plate to be bounced off under the action of elasticity of the elastic structure.

6. The adjustable position sacral nerve stimulation electrode as recited in claim 3, wherein said barb retraction mechanism comprises a retraction cord and a connecting loop, the connecting loop is disposed on the extension plate of the end barb mechanism, the connecting loop is integrally connected to the extension plate, one end of the retraction cord is fixedly connected to the connecting loop, and the other end is a surgeon manipulation end.

7. The adjustable sacral nerve stimulation electrode as recited in claim 6, wherein a barb retrieval structure is provided on each of said end barb structures, a hand pull ring is provided for connecting to each retrieval string physician manipulation end, the hand pull ring being integrally connected to each retrieval string.

8. The adjustable position sacral nerve stimulation electrode as recited in claim 3, wherein said barb retrieval structure comprises a lever removably connected to the end barb structure.

9. The adjustable position sacral nerve stimulation electrode as recited in claim 8, wherein said lever is externally threaded at one end thereof and a matching internally threaded sleeve is provided on the extension plate of the end barb arrangement, the lever being threadably connected to the extension plate.

10. The adjustable position sacral nerve stimulation electrode as recited in any one of claims 3-9, wherein said protruding plates of said end barb structure are positioned in a spatial location between adjacent protruding plates of other barb elements.