CN111839497B - Sacral nerve function monitoring device - Google Patents
Sacral nerve function monitoring device Download PDFInfo
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- CN111839497B CN111839497B CN201910345855.0A CN201910345855A CN111839497B CN 111839497 B CN111839497 B CN 111839497B CN 201910345855 A CN201910345855 A CN 201910345855A CN 111839497 B CN111839497 B CN 111839497B
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- catheter
- electrode
- sphincter
- monitoring
- signal acquisition
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- 210000005036 nerve Anatomy 0.000 title claims abstract description 52
- 238000012806 monitoring device Methods 0.000 title claims abstract description 28
- 210000005070 sphincter Anatomy 0.000 claims abstract description 74
- 238000012544 monitoring process Methods 0.000 claims abstract description 62
- 238000002513 implantation Methods 0.000 claims abstract description 14
- 210000003708 urethra Anatomy 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 208000028389 Nerve injury Diseases 0.000 abstract description 5
- 230000008764 nerve damage Effects 0.000 abstract description 5
- 230000002485 urinary effect Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 35
- 230000027939 micturition Effects 0.000 description 5
- 210000000436 anus Anatomy 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 210000000278 spinal cord Anatomy 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 208000003443 Unconsciousness Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000005077 saccule Anatomy 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 208000034347 Faecal incontinence Diseases 0.000 description 1
- 206010020853 Hypertonic bladder Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000009722 Overactive Urinary Bladder Diseases 0.000 description 1
- 208000029033 Spinal Cord disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 206010008129 cerebral palsy Diseases 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000013872 defecation Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000030214 innervation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003183 myoelectrical effect Effects 0.000 description 1
- 230000003767 neural control Effects 0.000 description 1
- 208000020629 overactive bladder Diseases 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000002640 perineum Anatomy 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 208000020431 spinal cord injury Diseases 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
- A61B5/6853—Catheters with a balloon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
- A61B5/6874—Bladder
Abstract
The utility model discloses a sacral nerve function monitoring device which comprises a catheter and a monitoring electrode, wherein the catheter comprises a catheter implantation end, a catheter main body and a catheter interface end, a catheter hole is formed in the catheter implantation end, a balloon is arranged on the outer wall of the catheter main body at the joint of the catheter implantation end and the catheter main body, the monitoring electrode comprises a bladder sphincter signal acquisition electrode and a urethral sphincter signal acquisition electrode, the bladder sphincter signal acquisition electrode is arranged on the catheter main body below the balloon, and the urethral sphincter signal acquisition electrode is arranged on the catheter main body below the bladder sphincter signal acquisition electrode. The device can continuously monitor signals of the urethral sphincter and the bladder sphincter, capture abnormal signals and give an alarm, so that the risk of sacral nerve injury in operation is avoided; ensuring that the patient keeps the complete function of the urinary system.
Description
Technical Field
The utility model belongs to the field of medical appliances, and particularly relates to a sacral nerve function monitoring device.
Background
Lumbosacral spinal cord surgery is a common operation in clinic. Such as pediatric cerebral palsy selective back root surgery and spinal cord diseases (such as spinal cord injury, intramedullary tumor, spinal cord tie syndrome), etc. Only the sacral three nerves of the four pairs of sacral nerves of the human body are mostly distributed to the anus and the bladder. Bladder control is a complex combination of conscious and unconscious neural control that is responsive to a highly distributed afferent nerve group associated with the bladder. The caudal sacrum S2-S4 innervates the bladder sphincter, the urethral sphincter, which muscle groups are necessary for normal urination function. When the spinal surgery causes damage to the sacral nerve, this innervation may lead to loss or impairment of the function of the urinating or defecating function. It is therefore desirable to not damage the sacral three nerve roots as much as possible during lumbosacral surgery, which would otherwise lead to complications such as fecal incontinence. No reasonably effective sacral nerve function protection technology is realized in the existing operation, and complications of urination and defecation function loss of patients after operation are common. In clinical outpatient inspection, the electrode used for myoelectricity measurement is usually a skin surface electrode, and because the perineum skin area is small and skin folds are more, the part attached with the electrode is close to the urethral orifice, the electrode is easy to generate poor contact, or the electrode is stained with urine to cause false signals during urination. The body surface electrode is more inaccessible to the urethra and sphincter vesica.
Since the sacral nerve innervates the bladder sphincter and the urinary sphincter, controlling the function of urination, the state and position of the sacral nerve can be determined by taking signal changes from the bladder sphincter and the urinary sphincter.
The Chinese patent application No. CN201420870746.3 discloses a sacral three nerve root detection device, comprising: an electrode for outputting a stimulating current to the anal sphincter according to the instruction of the microprocessor to cause the anus to shrink; the pressure sensing air bag is arranged in the anus and is used for sensing the pressure of the anus; and the microprocessor is used for comparing the stimulation current value with a preset current value, comparing the pressure change value with the preset pressure value, judging whether the electrode contact position corresponds to the sacral three nerve root according to the comparison result, and generating prompt information according to the judgment result. However, the technical scheme has the defects that the pressure is not a standard index which is determined, the accurate measurement of the pressure cannot be realized, the pressure generated by the contraction of the muscle of each patient individual is different, and the accurate positioning of the corresponding nerve is difficult to achieve. Has no clinical significance.
Prior art attempts have also been made to treat overactive bladder by denervating selected tissue within or near the bladder wall based on the sacral nerve's relationship to the function of urination to reduce afferent nerve transmission to the sacral spinal cord in the pelvic region. Chinese patent application No. cn201280046659.X discloses an energy delivery device configured to regulate bladder function comprising: an elongate shaft having a distal region; and an energy delivery element sized and shaped to be positioned at a desired location within the bladder and configured to deliver energy to non-superficial target tissue within or near the bladder wall to modulate bladder function while maintaining a mucosal surface of the bladder wall shallower than the non-superficial target tissue substantially intact, a distal region of the elongate shaft configured to position the energy delivery element at the desired location within the bladder. The device may deliver energy to denervate selected portions of the bladder. The device positions the energy delivery element on the inflatable member (balloon) with high demands on the material and process due to the different materials' adhesion and ductility.
An ideal device is not available in the prior art, and can effectively monitor signals of the bladder and the urethral sphincter, capture abnormal signals and give an alarm, so that the risk of injury to the sacral nerve in operation is avoided.
The function reflects the sacral nerve function change.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a sacral nerve function monitoring device, which can continuously monitor the myoelectric signals of the sphincter of the bladder and the sphincter of the urethra in operation to reflect the sacral nerve function state and avoid the sacral nerve injury in the operation of the lumbosacral part.
The specific technical scheme of the utility model is as follows:
the utility model provides a sacral nerve function monitoring device, includes catheter and monitoring electrode, the catheter includes the pipe implantation end, pipe main part and pipe interface end, is equipped with the catheterization hole on the pipe implantation end, is equipped with the sacculus on the pipe main part outer wall of pipe implantation end and pipe main part junction, and the sacculus can be controlled expansion or shrink, the monitoring electrode includes at least a pair of bladder sphincter signal acquisition electrode (positive pole and negative pole) and at least a pair of urethra sphincter signal acquisition electrode (positive pole and negative pole), according to the physiological structures of human bladder and urethra, sets up the position of bladder sphincter signal acquisition electrode and urethra sphincter signal acquisition electrode on the pipe main part, under the general case, bladder sphincter signal acquisition electrode sets up on the pipe main part of pressing close to the sacculus below, and urethra sphincter signal acquisition electrode sets up on the pipe main part of bladder sphincter signal acquisition electrode below.
Preferably, the bladder sphincter signal collection electrode is spaced from 0.1 cm to 3cm, preferably 2cm, below the balloon and the distance between the urethral sphincter signal collection electrode and the bladder sphincter signal collection electrode is 0.5 cm to 6cm, preferably 3cm.
The sacral nerve function monitoring device is characterized in that the balloon is provided with a contractible/expandable guide wire bracket, the contraction/expansion of the balloon is controlled through the contraction/expansion of the guide wire bracket, the guide wire bracket can be in a common contraction/expansion form such as a net shape, an umbrella shape and the like, a control mechanism of the guide wire bracket can be arranged along the outer wall of the catheter main body, a cavity can be arranged in the wall of the catheter main body, and a control mechanism of the guide wire bracket is arranged in the cavity; or the sacculus can be connected with the pressurizing device, the pressurizing device can charge gas or liquid into the sacculus to expand the sacculus, the sacculus is provided with a catheter connecting interface with the pressurizing device or the sacculus is connected with a catheter, and the catheter is provided with an interface connected with the pressurizing device; or a cavity is arranged in the wall of the catheter main body, the saccule is communicated with the cavity, the cavity is provided with an opening at the tail end of the catheter main body (the end near the interface end of the catheter), the opening is connected with the catheter, and the catheter is provided with an interface connected with the pressurizing device. Preferably, the balloon is circumferentially coated on the outer wall of the catheter body at the junction of the catheter implantation end and the catheter body.
The monitoring electrode can be any shape such as a line shape, a dot shape, a bar shape, a round shape, a rectangular shape, a triangular shape, an elliptic shape, a polygonal shape and the like, and one or more pairs of the bladder sphincter signal collecting electrode or the urethral sphincter signal collecting electrode can be arranged. Preferably, the monitoring electrode may be in a linear or bar shape, and is arranged longitudinally or transversely along the catheter body. The bladder sphincter signal acquisition electrodes or the urethral sphincter signal acquisition electrodes are arranged symmetrically along the circumferential direction of the catheter main body when the number of pairs of the bladder sphincter signal acquisition electrodes or the urethral sphincter signal acquisition electrodes is great.
The sacral nerve function monitoring device is characterized in that the tail end of the monitoring electrode is provided with a signal transmission terminal which is connected with a lead of nerve function monitoring equipment; or the monitoring electrode is connected with the lead or the conducting layer or the whole monitoring electrode is made of the lead or the conducting layer material and is exposed in the signal acquisition area of the sphincter vesica and/or the sphincter urethras. The lead or conductive layer is connected to the nerve function monitoring device at the distal end of the catheter body. The conducting layer can be a conductive coating, a sheet-shaped film-shaped metal alloy or a metal coating with electric conduction performance.
The conducting wire or the conducting layer can be provided with an insulating outer layer, is attached to the outer wall of the catheter main body or is distributed along the outer wall of the catheter main body, can be buried in the wall of the catheter main body, one end of the conducting wire or the conducting layer penetrates out of the signal acquisition area of the bladder sphincter and/or the urethral sphincter to be connected with the electrode or the conductive layer is exposed out of the penetrating part to serve as the electrode, and the other end of the conducting wire or the conducting layer penetrates out of the tail end of the catheter main body to be connected with nerve function monitoring equipment.
Or, the catheter main body is provided with an insulated outer sleeve, a control mechanism of the catheter or the guide wire bracket connected with the saccule and a conducting wire or a conducting layer connected with the monitoring electrode are arranged in the outer sleeve along the outer wall of the catheter main body, and a window is formed in a position of the outer sleeve corresponding to the monitoring electrode so that the monitoring electrode is exposed and contacted with the vesical sphincter and the urethral sphincter signal acquisition area.
The sacral nerve function monitoring device of the utility model preferably has a catheter body with an insulating outer layer and an inner wall, the inner wall being provided with a channel for accommodating the passage of an electrode/lead and a cavity connected with a balloon or a cavity for accommodating a control mechanism of a guide wire stent.
The sacral nerve function monitoring device also comprises an electrode expansion piece for controlling the monitoring electrode to stretch, wherein the electrode expansion piece can be arranged in the outer sleeve pipe along the outer wall of the catheter main body or arranged in a cavity in the wall of the catheter main body, the electrode expansion piece comprises a fixed rod and a push rod, the fixed rod is fixedly connected with the catheter main body along the electrode walking direction, a sliding block is sleeved on the fixed rod, the sliding block is fixedly connected with the push rod, the sliding block can freely slide along the rod under the push of the push rod, one end of an anode and/or a cathode of the monitoring electrode is fixedly connected with the fixed rod, the other end of the monitoring electrode is fixedly connected with the sliding block, the sliding block can slide between two ends of the anode and/or the cathode under the push of the push rod, and one thrust end of the push rod extends out from the tail end (the end near the interface end of the catheter) of the outer sleeve pipe or the cavity. When the sliding block slides to one end of the anode and/or the cathode of the monitoring electrode fixedly connected with the fixed rod, the monitoring electrode has a working state of protruding outwards (bladder wall/urethra wall) under the thrust of the sliding block, and the monitoring electrode can be better attached to the urethra wall; and then when the sliding block reversely slides, the monitoring electrode has an initial state of being close to the wall of the catheter main body under the pulling force of the sliding block.
The electrode expansion piece can be one or a plurality of electrode expansion pieces, the anode and the cathode of a pair of monitoring electrodes can be controlled simultaneously, and the anode and the cathode of the monitoring electrodes can be controlled independently. Preferably, the middle part of the anode and/or the cathode of the monitoring electrode is provided with a folding point, the anode and/or the cathode can be formed by hinging two sections of electrode materials, and the hinging point is the folding point. Or the anode and/or the cathode are made of elastic metal or memory metal, and are bent to form a folding point. The folding point can facilitate the sliding block to move so as to form the convex electrode.
Compared with the prior art, the utility model has the following beneficial effects:
1. the nerve injury caused by the surgical instrument or operation can be carelessly caught by the electrode of the utility model, and the nerve injury can be transmitted to the host for real-time analysis and alarm, so that the operator can adjust in time to avoid the nerve mechanical injury, and the effect of protecting the nerve can be achieved.
2. The utility model can monitor the electromyographic signals of the bladder sphincter and the urethra sphincter simultaneously, is not polluted by urine during monitoring, and has more accurate detection.
3. The utility model adopts the electrode expansion piece to ensure that the electrode is better contacted with the bladder sphincter and the urethra sphincter, thereby ensuring the accuracy of monitoring data.
4. The utility model has simple structure and ingenious design, and can well realize the monitoring of the sacral nerve function.
Drawings
Fig. 1 is a schematic overall view of the sacral nerve function monitoring device according to embodiment 1.
Fig. 2 is a schematic structural diagram of a sacral nerve function monitoring device according to embodiment 1.
Fig. 3 is a schematic view of the lateral arrangement of the monitoring electrodes in example 1 (a is a schematic view in front and B is a schematic view in side view).
Fig. 4 is a schematic cross-sectional view of the catheter body of example 1.
Fig. 5 is a schematic structural diagram of a sacral nerve function monitoring device according to embodiment 2.
Fig. 6 is a schematic view of the electrode extension structure of example 3 (a is an initial state, and B is an operating state).
Fig. 7 is a schematic view of the electrode extension member with a folding point according to embodiment 3 (a is an initial state, and B is an operating state).
Detailed Description
The following examples illustrate the specific steps of the present utility model, but are not limited thereto.
The terms used in the present utility model generally have meanings commonly understood by those of ordinary skill in the art unless otherwise indicated.
The utility model will be described in further detail below in connection with specific examples and with reference to the data. It should be understood that these examples are intended to illustrate the utility model and are not intended to limit the scope of the utility model in any way.
In the following examples, various processes and methods, which are not described in detail, are conventional methods well known in the art.
Example 1
1-4, a sacral nerve function monitoring device comprises a catheter 1 and a monitoring electrode 2, wherein the catheter comprises a catheter implantation end 11, a catheter main body 12 and a catheter interface end 13, a catheter hole 14 is formed in the catheter implantation end 11, a balloon 15 is arranged on the outer wall of the catheter main body at the joint of the catheter implantation end and the catheter main body, and the balloon 15 is circumferentially coated on the outer wall of the catheter main body at the joint of the catheter implantation end and the catheter main body.
The monitoring electrode 2 includes a pair of bladder sphincter signal collection electrodes 21 (anode and cathode) and a pair of urethral sphincter signal collection electrodes 22 (anode and cathode), and according to the physiological structures of the human bladder and urethra, the positions of the bladder sphincter signal collection electrodes and the urethral sphincter signal collection electrodes are set on the catheter body, and in general, the bladder sphincter signal collection electrodes are set on the catheter body close to the lower portion of the balloon, and the urethral sphincter signal collection electrodes are set on the catheter body below the bladder sphincter signal collection electrodes.
Preferably, the sphincter vesica signal acquisition electrode is spaced from 0.1 to 3cm, preferably 2cm, below the balloon, and the distance between the sphincter urethras signal acquisition electrode and the sphincter vesica signal acquisition electrode is 0.5 to 6cm, preferably 3cm.
The monitoring electrodes may be strip-shaped, and arranged longitudinally (fig. 2) or transversely along the catheter body (fig. 3, fig. 3A is a front view partially schematic, and fig. 3B is a side view partially schematic). The bladder sphincter signal acquisition electrodes or the urethral sphincter signal acquisition electrodes are arranged symmetrically along the circumferential direction of the catheter main body when the number of pairs of the bladder sphincter signal acquisition electrodes or the urethral sphincter signal acquisition electrodes is great.
The sacral nerve function monitoring device is characterized in that the tail end of the monitoring electrode is provided with a signal transmission terminal 23 which is connected with a lead of nerve function monitoring equipment; or the monitoring electrode is connected with the nerve function monitoring device at the tail end of the catheter main body through the lead 24 or the conducting layer 24 or the whole monitoring electrode adopts the lead or the conducting layer material (the lead of the electrode part is removed with the lead insulating layer). The conducting layer can be a conductive coating or a sheet-shaped and film-shaped electrode signal conduction band.
As shown in fig. 4, the catheter body has an insulating outer layer 121 and an inner wall 122, on which a channel 123 for receiving an electrode/lead wire to pass through and a cavity 124 connected to a balloon are provided, the cavity 124 connected to the balloon being provided with an opening at the distal end of the catheter body (the end near the catheter interface end), the opening being connected to the catheter 16, one end of the catheter 16 having an interface 17 connected to a pressurizing means for inflating/deflating the balloon with gas or liquid.
The channel 123 has openings at one end of the catheter body toward the catheter hub end and at the electrode location, and a lead wire or conductive material connected with an electrode is inserted from the opening at one side of the catheter body toward the catheter hub end to the opening at one end of the electrode location and is passed out, and the electrode is exposed along the outer wall of the catheter body in the bladder sphincter region and/or the urethral sphincter region for collecting signals.
Example 2
As shown in fig. 5, in this embodiment, on the basis of embodiment 1, the insulating outer layer of the catheter body is omitted, an insulating outer sleeve 18 is added, a control mechanism of the catheter or the guide wire bracket connected with the balloon and a wire connected with the monitoring electrode are arranged in the outer sleeve along the catheter, and a window 19 is formed at a position of the outer sleeve 18 corresponding to the monitoring electrode so as to expose the monitoring electrode and contact with the vesical sphincter and the urethral sphincter signal acquisition area.
Example 3
The sacral nerve function monitoring device according to this embodiment further has an electrode extension member 3 for controlling the extension and retraction of the monitoring electrode 2 on the basis of embodiment 1 or 2, as shown in fig. 6, the electrode extension member may be arranged in the outer sleeve 18 along the outer wall of the catheter body or in the cavity 123 in the wall of the catheter body, the electrode extension member includes a fixing rod 31 and a pushing rod 32, the fixing rod is fixedly connected with the outer wall of the catheter body or the inner wall of the cavity 123 along the electrode traveling direction, the fixing rod is sleeved with a sliding block 33, the sliding block 33 is fixedly connected with the pushing rod 32, the sliding block is pushed and pulled by the pushing rod to freely slide along the rod, one end of the anode and/or the cathode of the monitoring electrode 2 is fixedly connected with the fixing rod, the other end of the sliding block is pushed and pulled by the pushing rod to slide along the fixing rod between two ends of the anode and/or the cathode, and one end of the pushing rod, which is pushed by the outer sleeve 18 or one end of the cavity 123 (the end near the interface end of the catheter). When the sliding block slides to one end of the anode and/or the cathode of the monitoring electrode fixedly connected with the fixed rod, the monitoring electrode has a working state (figure 6B) of being outwards (the urethral wall) protruded by the thrust of the sliding block, and the monitoring electrode can be better attached to the urethral wall; then, when the slider slides in the reverse direction, the monitor electrode 2 has an initial state of being brought close to the wall of the catheter body by the pull force of the slider (fig. 6A).
The electrode expansion piece can be one or a plurality of electrode expansion pieces, the anode and the cathode of a pair of monitoring electrodes can be controlled simultaneously, and the anode and the cathode of the monitoring electrodes can be controlled independently. Preferably, the middle part of the anode and/or the cathode of the monitoring electrode is provided with a folding point 34 (as shown in fig. 7), the anode and/or the cathode can be formed by hinging two sections of electrode materials, and the hinging point is the folding point. Or the anode and/or the cathode are made of elastic metal or memory metal, and are bent to form a folding point. The folding point can facilitate the sliding block to move so as to form the convex electrode.
According to the sacral nerve function monitoring device, a catheter is inserted into the urethra according to the conventional operation of an operation, the inlet end of the catheter is positioned in the bladder, and the air bag is inflated and reserved. The electrode of the monitoring device is connected with the nerve function monitoring equipment, signals of the urethral sphincter and the bladder sphincter are continuously monitored, abnormal signals are captured to give an alarm, and the risk of sacral nerve injury in operation is avoided; ensuring that the patient keeps the complete function of the urinary system.
Claims (8)
1. The utility model provides a sacral nerve function monitoring device, its characterized in that includes catheter and monitoring electrode, the catheter includes catheter implantation end, catheter main part and catheter interface end, is equipped with the urethral catheterization hole on catheter implantation end, is equipped with the sacculus on the catheter main part outer wall of catheter implantation end and catheter main part junction, the monitoring electrode includes bladder sphincter signal acquisition electrode and urethra sphincter signal acquisition electrode, bladder sphincter signal acquisition electrode sets up in the catheter main part of sacculus below, and urethra sphincter signal acquisition electrode sets up in the catheter main part of bladder sphincter signal acquisition electrode below, the monitoring electrode is linear or bar, vertically or transversely arranges along the catheter main part, bladder sphincter signal acquisition electrode is 0.1-3cm below the sacculus, the distance between urethra sphincter signal acquisition electrode and the bladder sphincter signal acquisition electrode is 0.5-6cm.
2. The sacral nerve function monitoring device of claim 1 wherein said balloon has a collapsible/expandable guidewire stent; or the balloon is connected with the pressurizing device, the pressurizing device can charge/discharge gas or liquid into the balloon to expand/contract the balloon, a catheter connecting interface with the pressurizing device is arranged on the balloon or the balloon is connected with a catheter, one end of the catheter is provided with the interface connected with the pressurizing device, or a cavity is arranged in the wall of the catheter main body, the balloon is communicated with the cavity, the tail end of the catheter main body is provided with an opening, the opening is connected with the catheter, and the catheter is provided with the interface connected with the pressurizing device.
3. The sacral nerve function monitoring device according to claim 1, wherein the monitoring electrode tip has a signal transmission terminal connected to a lead of a nerve function monitoring apparatus; or the monitoring electrode is connected with the nerve function monitoring equipment at the tail end of the catheter main body through a wire or a conducting layer or the whole monitoring electrode is a wire or a conducting layer.
4. The sacral nerve function monitoring device of claim 3 wherein said conductive layer is a conductive coating or a sheet-like, film-like metal alloy or metal coating having electrical conductivity.
5. The sacral nerve function monitoring device according to claim 2, wherein the catheter body has an insulated outer sleeve, the control mechanism of the catheter or the guide wire support connected to the balloon and the guide wire connected to the monitoring electrode are arranged in the outer sleeve along the catheter, and the outer sleeve is provided with a window at a position corresponding to the monitoring electrode so as to expose the monitoring electrode and contact with the vesical sphincter and the urethral sphincter signal acquisition area.
6. The sacral nerve function monitoring device of claim 2 wherein the catheter body has an outer insulating layer and an inner wall with a passageway for passage of an electrode/lead therethrough and a lumen for connection to a balloon or for receiving a control mechanism of a guidewire stent.
7. The sacral nerve function monitoring device according to claim 1, further comprising an electrode expansion member for controlling the monitoring electrode to stretch and retract, wherein the electrode expansion member comprises a fixing rod and a push rod, the fixing rod is fixedly connected with the catheter main body along the electrode traveling direction, a sliding block is sleeved on the fixing rod and fixedly connected with the push rod, the sliding block can freely slide along the rod by pushing and pulling the push rod, one end of an anode and/or a cathode of the monitoring electrode is fixedly connected with the fixing rod, the other end of the monitoring electrode is fixedly connected with the sliding block, and the sliding block can slide between two ends of the anode and/or the cathode along the fixing rod by pushing and pulling the push rod.
8. The sacral nerve function monitoring device of claim 7 wherein the monitoring electrode has a break point in the middle of the anode and/or cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910345855.0A CN111839497B (en) | 2019-04-26 | 2019-04-26 | Sacral nerve function monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910345855.0A CN111839497B (en) | 2019-04-26 | 2019-04-26 | Sacral nerve function monitoring device |
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| CN111839497A CN111839497A (en) | 2020-10-30 |
| CN111839497B true CN111839497B (en) | 2024-02-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103750899A (en) * | 2014-01-21 | 2014-04-30 | 深圳市惠泰医疗器械有限公司 | Multi-electrode basket catheter and manufacture method thereof |
| US9037211B1 (en) * | 2011-12-16 | 2015-05-19 | Siddharth Sadanand | Bladder monitoring device |
| CN108883278A (en) * | 2016-02-12 | 2018-11-23 | 因库博实验室有限责任公司 | For the device and method of the bladder control screening patient stimulated by nervus pudendus |
| CN210144646U (en) * | 2019-04-26 | 2020-03-17 | 张霞玲 | Sacral nerve function monitoring device |
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| US7328070B2 (en) * | 2005-04-28 | 2008-02-05 | Medtronic, Inc. | Multi-tube sensor for sensing urinary sphincter and urethral pressure |
| GB2435834A (en) * | 2006-03-06 | 2007-09-12 | Michael Craggs | Neuromodulation device for pelvic dysfunction |
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|---|---|---|---|---|
| US9037211B1 (en) * | 2011-12-16 | 2015-05-19 | Siddharth Sadanand | Bladder monitoring device |
| CN103750899A (en) * | 2014-01-21 | 2014-04-30 | 深圳市惠泰医疗器械有限公司 | Multi-electrode basket catheter and manufacture method thereof |
| CN108883278A (en) * | 2016-02-12 | 2018-11-23 | 因库博实验室有限责任公司 | For the device and method of the bladder control screening patient stimulated by nervus pudendus |
| CN210144646U (en) * | 2019-04-26 | 2020-03-17 | 张霞玲 | Sacral nerve function monitoring device |
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