CN211986633U - Valve mechanism for diaphragm type air bag urinary catheter and urinary catheter - Google Patents
Valve mechanism for diaphragm type air bag urinary catheter and urinary catheter Download PDFInfo
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- CN211986633U CN211986633U CN201820685136.4U CN201820685136U CN211986633U CN 211986633 U CN211986633 U CN 211986633U CN 201820685136 U CN201820685136 U CN 201820685136U CN 211986633 U CN211986633 U CN 211986633U
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- diaphragm
- valve
- catheter
- elastic
- cavity
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 230000002485 urinary effect Effects 0.000 title claims description 12
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 3
- 210000002700 urine Anatomy 0.000 abstract description 14
- 239000012466 permeate Substances 0.000 abstract description 3
- 230000027939 micturition Effects 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001568 sexual effect Effects 0.000 description 2
- 210000005070 sphincter Anatomy 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000036724 intravesical pressure Effects 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
The utility model discloses a valve mechanism for a diaphragm type air bag catheter and a catheter using the valve mechanism, wherein the front part of a catheter body is provided with a catheter hole communicated with a tube cavity, an arched elastic diaphragm is arranged on the catheter body, the valve mechanism is arranged in the tube cavity of the catheter body corresponding to the position of the elastic diaphragm, a sealed diaphragm cavity is formed between the elastic diaphragm and the outer wall of the catheter body, and a channel is arranged on the catheter body to communicate the diaphragm cavity with a valve core cavity; the flexible membrane is arranged at one end, located in the valve core cavity, of the channel, the outer edge of the end portion, along the channel, of the flexible membrane is connected with the inner wall of the pipe body in a sealing mode, a closed space is formed among the flexible membrane, the channel and the elastic membrane, and gas or liquid is filled in the closed space. The utility model discloses a valve mechanism has solved the technical problem that the urine permeates into in the elastic diaphragm through soft film, prevents effectively that the urine from permeating away from the gap between case and the valve body to the pressure differential between the interior pressure of elastic diaphragm and the pressure in the bladder has been guaranteed.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to diaphragm formula gasbag catheter.
Background
The air bag catheter is a common clinical urine drainage instrument, a catheter hole communicated with a tube cavity and an air bag used for preventing the front end of the catheter from being separated from a bladder are arranged at the front part of a tube body, an inflation port communicated with the air bag is arranged at the rear part of the tube body, a urine discharge port is arranged at the tail end of the tube body, and when the front part of the tube body is inserted into the bladder at a proper position, the air bag is inflated through the inflation port to expand the air bag to realize fixation.
On a traditional balloon catheter, a urethral orifice and a urethral orifice are always in a conduction state, a little urine in a bladder is discharged, so that the bladder is in an emptying state for a long time, in bionics, the change of the internal pressure of the bladder is beneficial to keeping the function of the bladder, the change of the internal pressure of the bladder is realized in the process of urine accumulation and discharge, the bladder is in the emptying state for a long time, the stress relaxation function of detrusor muscle, internal sphincter muscle and external sphincter muscle of the bladder can be reduced, and the urine storage function and the urination reflex of the bladder can be weakened when the bladder is serious, so that the function of the bladder is gradually reduced, and finally the function of the bladder is wasted and atrophied.
The invention application with the publication number of 106975142A, which is applied by the applicant at 3, 16 and 2017, discloses a diaphragm type air bag urinary catheter, wherein the front part of a catheter body is provided with an air bag and a urinary guide hole communicated with a catheter cavity, the rear part of the catheter body is provided with an inflation port communicated with the air bag, the tail end of the catheter body is a urinary discharge port, one side of the catheter body, which faces the urinary guide hole at the tail end of the catheter body, is connected with an arched elastic diaphragm, a valve mechanism is arranged in the catheter cavity, and the inner wall of the elastic diaphragm is connected with a valve core of the valve mechanism to drive the valve core. The valve mechanism is provided with at least two inlets, the two elastic membranes are symmetrically arranged on two sides of the pipe body and are respectively connected with one valve core, and the movement of each valve core opens or closes at least one inlet. The valve mechanism comprises a valve body and a valve core, the edge of the valve body is hermetically connected to the inner wall of the tube cavity, the valve body is provided with a valve core cavity, an inlet and an outlet which are respectively communicated with the valve core cavity, and the valve core is arranged in the valve core cavity. The valve core is provided with a valve core hole, and the valve core hole is overlapped or staggered with the inlet and the outlet along with the movement of the valve core, so that the on-off of the valve mechanism is realized.
However, in subsequent research and development, the applicant finds that urine slowly enters the valve core cavity from the inlet and the outlet of the valve mechanism, and permeates into the elastic membrane through the joint of the elastic membrane on the pipe body and the valve mechanism, so that the pressure in the sexual membrane is slowly close to the pressure of the external intravesical pressure, and the function of the sexual membrane for regulating the bladder urine storage and urination reaction is gradually lost, and the function of the urinary catheter is lost.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a case mechanism of diaphragm formula gasbag catheter, in the urine can not get into the elastic membrane piece, the function of guaranteeing the catheter is not influenced.
The utility model discloses a following technical scheme realizes:
a valve mechanism for a diaphragm type air bag catheter is characterized in that a catheter hole communicated with a catheter cavity is formed in the front portion of a catheter body of the catheter, an arched elastic diaphragm is arranged on the catheter body, the valve mechanism is arranged in the position, corresponding to the elastic diaphragm, in the catheter cavity of the catheter body and comprises a valve body and a valve core, the edge portion of the valve body is connected to the inner wall of the catheter body in a sealing mode, a valve core cavity is formed in the valve body, the valve core is arranged in the valve core cavity,
the edge of the elastic diaphragm is hermetically connected with the outer wall of the pipe body, a sealed diaphragm cavity is formed between the elastic diaphragm and the outer wall of the pipe body, and a channel is arranged on the pipe body to communicate the diaphragm cavity with the valve core cavity;
a soft film is arranged at one end of the channel, which is positioned in the valve core cavity, the outer edge of the end part of the soft film along the channel is hermetically connected with the inner wall of the pipe body, a closed space is formed by the soft film, the channel and the elastic membrane, and gas or liquid is filled in the closed space;
one end of the valve core is abutted to the soft film, and an elastic medium for pushing the valve core to return is arranged between the other end of the valve core and the inner wall of the valve body.
The elastic medium is a spring.
The projection area of the diaphragm cavity on the outer wall of the pipe body is larger than that of the valve core cavity on the inner wall of the pipe body.
The utility model also provides a diaphragm formula gasbag catheter, including foretell valve mechanism.
Furthermore, the elastic diaphragm and the valve mechanism are respectively provided with two, the tube cavity is divided into two chambers through the diaphragm, at least two urethral catheterization holes respectively communicated with the two chambers are arranged at the front part of the tube body, the two elastic diaphragms are respectively connected to the tube body corresponding to the two chambers, and the two valve mechanisms are respectively arranged in the two chambers.
The two valve mechanisms are arranged in the two chambers in a staggered manner.
Further, the thickness of the elastic membrane sheet gradually increases from the center to the edge.
And a layer of hysteresis diaphragm is arranged in the elastic diaphragm, the elastic coefficient of the hysteresis diaphragm is greater than that of the elastic diaphragm, and the edge of the hysteresis diaphragm is hermetically connected with the outer wall of the tube body.
Compared with the prior art, the utility model the advantage lie in:
the utility model discloses a valve mechanism has solved the technical problem that the urine permeates into in the elastic diaphragm through soft film, prevents effectively that the urine from permeating away from the gap between case and the valve body to the pressure differential between the interior pressure of elastic diaphragm and the pressure in the bladder has been guaranteed.
When the elastic diaphragm is extruded, the gas or liquid filler in the elastic diaphragm can be extruded into the valve core cavity from the channel, so that the soft film is inflated, the volume is increased, the soft film can only expand towards the valve core due to the limitation of the valve core cavity, the valve core is pushed to move, and the valve core hole on the valve core is coincided with and communicated with the inlet and the outlet. At this point, urination is possible.
When the pressure applied on the pressure elastic diaphragm is reduced, the thrust of the valve core applied on the soft film is reduced, the elastic medium at the other end of the valve core pushes the valve core to return if a spring is used, the valve core hole is staggered with the inlet and the outlet and is closed, and then the urination is stopped.
The utility model discloses further improvement because the projected area in elastic diaphragm's diaphragm chamber is greater than the projected area in case chamber, consequently can increase the pressure of soft film to the case, promotes the thrust of case promptly.
The utility model discloses a further improvement, still be equipped with the hysteresis diaphragm in elastic diaphragm's inboard, because the elastic coefficient of hysteresis diaphragm is greater than elastic diaphragm's elastic coefficient, so when elastic diaphragm received the extrusion of urine in the bladder, elastic diaphragm is at first warp, inwards extrude, treat that elastic diaphragm is extruded to the hysteresis diaphragm when, begin to extrude the hysteresis diaphragm, when the hysteresis diaphragm receives the extrusion, gas or liquid filler in it can follow the interior case chamber of extruding of passageway, make soft film sufficient, the volume grow, owing to receive the restriction in case chamber, soft film can only expand to the case, thereby realize pushing away the case motion, and make case hole and import on the case, export coincidence, the intercommunication. At this point, urination is possible. On the contrary, when the urine in the bladder is reduced and the pressure is reduced, the elastic diaphragm is firstly reset, and the speed of restoring the original shape is slow due to the large elastic coefficient of the hysteresis diaphragm, so that the valve core can be delayed to return.
Drawings
Fig. 1 is the schematic structural diagram of the present invention, wherein the valve mechanism is in an off state.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is a schematic structural diagram of the present invention, wherein the valve mechanism is in an open state.
Fig. 4 is an enlarged schematic view of B in fig. 3.
Detailed Description
As shown in fig. 1 and 3, the catheter of the present invention has a catheter hole 3 provided in the front of a catheter body 1 for communicating with a lumen 2, an arched elastic membrane 4 provided on the catheter body 1, and a valve mechanism provided in the lumen 2 of the catheter body 1 at a position corresponding to the elastic membrane 4.
As shown in fig. 2 and 4, the valve mechanism includes a valve body 5 and a valve core 6, the edge of the valve body 5 is connected to the inner wall of the pipe body 1 in a sealing manner, the valve body 5 is provided with a valve core cavity 7, and the valve core 6 is arranged in the valve core cavity 7.
The edge of the elastic diaphragm 4 is connected with the outer wall of the tube body 1 in a sealing mode, a sealed diaphragm cavity 8 is formed between the elastic diaphragm 4 and the outer wall of the tube body 1, and a channel 9 is arranged on the tube body 1 to communicate the diaphragm cavity 8 with the valve core cavity 7.
A soft film 10 is arranged at one end of the channel 9, which is positioned in the valve core cavity 7, the outer edge of the end part of the soft film 10, which is along the channel 9, is hermetically connected with the inner wall of the pipe body 1, a closed space is formed among the soft film 10, the channel 9 and the elastic membrane 4, and gas or liquid is filled in the closed space;
one end of the valve core 6 is abutted against the soft film 10, and an elastic medium 11 for pushing the valve core 6 to return is arranged between the other end of the valve core and the inner wall of the valve body 5.
The elastic medium 11 is a spring.
The projection area of the diaphragm cavity 8 on the outer wall of the pipe body 1 is larger than that of the valve core cavity 7 on the inner wall of the pipe body 1.
As shown in fig. 1 and 3, the utility model discloses a valve mechanism is when using the catheter, elastic diaphragm 4 and valve mechanism respectively have two, lumen 2 separates for two cavities through diaphragm 12, body 1 front portion is provided with at least two catheterization holes 3 that communicate with two cavities respectively, two elastic diaphragm 4 connect respectively on the body 1 that two cavities correspond, and two valve mechanism set up respectively in two cavities.
In this embodiment, two valve mechanisms are staggered in two chambers.
As shown in fig. 2 and 4, the thickness of the elastic membrane 4 is gradually increased from the center to the edge in order to allow the elastic membrane to be initially dented from the center when it is pressurized.
In order to obtain the effect of delaying the closing of the valve core 6, a layer of hysteresis diaphragm 13 is further arranged in the elastic diaphragm 4, the elastic coefficient of the hysteresis diaphragm 13 is greater than that of the elastic diaphragm 4, and the edge of the hysteresis diaphragm 13 is connected with the outer wall of the tube body 1 in a sealing mode. The restoring process of the viscous membrane 13 has hysteresis, and when the elastic membrane 4 is restored, the viscous membrane 13 is still slowly restored.
Claims (7)
1. The utility model provides a valve mechanism that diaphragm formula gasbag catheter was used, the body front portion of catheter is provided with the catheterization hole of intercommunication lumen, is equipped with arched elastic diaphragm on the body, the intracavity of body is equipped with valve mechanism corresponding to elastic diaphragm's position, valve mechanism includes valve body and case, valve body limit portion sealing connection is in the body inner wall, be provided with the case chamber on the valve body, the case sets up its characterized in that in the case chamber:
the edge of the elastic diaphragm is hermetically connected with the outer wall of the pipe body, a sealed diaphragm cavity is formed between the elastic diaphragm and the outer wall of the pipe body, and a channel is arranged on the pipe body to communicate the diaphragm cavity with the valve core cavity;
a soft film is arranged at one end of the channel, which is positioned in the valve core cavity, the outer edge of the end part of the soft film along the channel is hermetically connected with the inner wall of the pipe body, a closed space is formed by the soft film, the channel and the elastic membrane, and gas or liquid is filled in the closed space;
one end of the valve core is abutted to the soft film, and an elastic medium for pushing the valve core to return is arranged between the other end of the valve core and the inner wall of the valve body.
2. The valve mechanism for a diaphragm-type air bag catheter according to claim 1, wherein: the elastic medium is a spring.
3. The valve mechanism for a diaphragm-type air bag catheter according to claim 1, wherein: the projection area of the diaphragm cavity on the outer wall of the pipe body is larger than that of the valve core cavity on the inner wall of the pipe body.
4. A diaphragm formula gasbag catheter which characterized in that: comprising a valve mechanism as claimed in claim 1 or 2 or 3.
5. The membranous balloon urinary catheter according to claim 4, wherein:
the flexible catheter is characterized in that the number of the flexible diaphragms and the number of the valve mechanisms are two respectively, the catheter cavity is divided into two chambers through a diaphragm, at least two urethral catheterization holes communicated with the two chambers are formed in the front portion of the catheter body, the two flexible diaphragms are connected to the catheter body corresponding to the two chambers respectively, and the two valve mechanisms are arranged in the two chambers respectively.
6. The membranous balloon urinary catheter according to claim 5, wherein: the two valve mechanisms are arranged in the two chambers in a staggered manner.
7. The membranous balloon urinary catheter according to claim 4, wherein: the thickness of the elastic membrane sheet gradually increases from the center to the edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820685136.4U CN211986633U (en) | 2018-05-09 | 2018-05-09 | Valve mechanism for diaphragm type air bag urinary catheter and urinary catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820685136.4U CN211986633U (en) | 2018-05-09 | 2018-05-09 | Valve mechanism for diaphragm type air bag urinary catheter and urinary catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211986633U true CN211986633U (en) | 2020-11-24 |
Family
ID=73411190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820685136.4U Expired - Fee Related CN211986633U (en) | 2018-05-09 | 2018-05-09 | Valve mechanism for diaphragm type air bag urinary catheter and urinary catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211986633U (en) |
-
2018
- 2018-05-09 CN CN201820685136.4U patent/CN211986633U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 |