CN209967369U - Dilating catheter - Google Patents
Dilating catheter Download PDFInfo
- Publication number
- CN209967369U CN209967369U CN201821236501.XU CN201821236501U CN209967369U CN 209967369 U CN209967369 U CN 209967369U CN 201821236501 U CN201821236501 U CN 201821236501U CN 209967369 U CN209967369 U CN 209967369U
- Authority
- CN
- China
- Prior art keywords
- guide
- seat
- expansion
- sleeve
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000000916 dilatatory effect Effects 0.000 title description 2
- 210000005077 saccule Anatomy 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 210000003708 urethra Anatomy 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 210000003128 head Anatomy 0.000 description 3
- 238000002627 tracheal intubation Methods 0.000 description 3
- 206010065584 Urethral stenosis Diseases 0.000 description 2
- 201000001988 urethral stricture Diseases 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 206010004446 Benign prostatic hyperplasia Diseases 0.000 description 1
- 206010049576 Bladder neck sclerosis Diseases 0.000 description 1
- 241001631457 Cannula Species 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000004403 Prostatic Hyperplasia Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 208000000143 urethritis Diseases 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- 210000001635 urinary tract Anatomy 0.000 description 1
Images
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- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model provides an expansion catheter, including pipe and expansion guide, the one end of pipe is equipped with the catheterization hole, the pipe cover is outside in expansion guide, the expansion guide includes guide main part, overlaps in the outside sleeve pipe of guide main part, expansion sacculus, guide seat and aerating device, guide main part includes main part and sacculus portion, and the expansion sacculus sets up in the sacculus portion of guide main part, and the length of main part, the length of pipe and sheathed tube length cooperate, the one end that sacculus portion was kept away from to the main part links to each other with guide seat, the one end that main part was kept away from to the guide seat is equipped with aerating device, aerating device is linked together with the expansion sacculus. The beneficial effects of the utility model are that owing to adopt above-mentioned technical scheme, provide new mode for the intubate of catheter, the intubate resistance is little, and patient's misery is little.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, a catheter with expansion guide.
Background
As a clinical common medical instrument, the urinary catheter is placed into a human body through the urethra and then drains urine from the bladder to the outside of the body, has the main functions of accurately recording urine volume, facilitating drainage, flushing and the like, and plays an important role in clinic.
The catheter is mainly made of silica gel, rubber, EVA, PVC and the like, and the head end and the catheter body are soft. But the resistance in the urethra of some patients is larger due to the conditions of urethral stricture, prostatic hyperplasia, canceration, bladder neck sclerosis and the like, thereby greatly increasing the difficulty of catheterization. The existing clinical catheterization is usually to fix the external urethral orifice with one hand after disinfecting the external urethral orifice and surrounding tissues, and the other hand directly holds the urethral catheter or holds the urethral catheter with forceps and the like, and the urethral catheter is inserted from the urethral orifice, and needs to be put in harder when facing the situations of resistance bending and stenosis, which brings great pain to patients, causes the damage of urethral mucosa, causes the damage of urinary tract structure, and increases the risk of urethral infection.
The existing clinical catheter implanting process has the following problems: when the top end of the head of the catheter advances to the narrow part of the urethra, external force is required to be increased for propulsion, the top end of the head and the urethra at the narrow part can generate a shearing effect, even if the head passes through the narrow urethra, the inner membrane of the urethra is seriously contused and conditions are created for microbial infection, lubricating oil and the like are smeared on the outer surface of the catheter, and the effect is very little when the urethral stricture is met.
Application number 2009200275009's utility model discloses a seal wire catheter, it includes seal wire and catheter, is equipped with the seal wire in the catheter, inserts the catheter with the seal wire earlier, makes the catheter have certain rigidity, after the catheter inserted the bladder, takes the seal wire out from the catheter again.
However, even with the presence of a guide wire, the problems encountered with the catheter cannulas described above are only alleviated to a limited extent, and catheter cannula resistance is not substantially reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a catheter with reasonable structure and simple operation.
The technical scheme of the utility model is that:
the utility model provides an expansion catheter, includes pipe and expansion guide, the one end of pipe is equipped with the catheterization hole, the pipe cover is outside in expansion guide, expansion guide includes guide main part, overlaps in the outside sleeve pipe of guide main part, expansion sacculus, guide seat and aerating device, guide main part includes main part and sacculus portion, and the expansion sacculus sets up in the sacculus portion of guide main part, and the length of main part, the length of pipe and sheathed tube length cooperate, the one end that sacculus portion was kept away from to the main part links to each other with guide seat, the one end that main part portion was kept away from to guide seat is equipped with aerating device, aerating device is linked together with the expansion sacculus.
The catheter in this application, inside has set up the expansion guide, and the expansion guide is except realizing the supporting role to the softer pipe of geology, still plays the supporting expansion effect to the urethral wall. The expansion sacculus is attached to the outer part of the guide main body, and the expansion sacculus can easily enter the urethra of the human body along with the expansion guide with the thin diameter under the uninflated state, and the expansion sacculus is inflated by the inflating device after entering the urethra of the human body, so that the urethra wall is supported. When the urethra is expanded, the expansion balloon gas is released, the urethral wall begins to shrink, a buffer period exists from the beginning of the contraction to the restoration of the urethral wall, at the moment, the driving sleeve drives the catheter to slide relative to the guiding device main body, the intubation action is completed, and finally the expansion guiding device is withdrawn. The sleeve of the expansion guider is used for supporting the catheter and is hard in texture and 50-80D in Shore hardness. The introducer body is slightly soft in texture and has a Shore hardness of 30-80A as it needs to pass through the urethra independently.
The length of the sacculus part is matched with that of the main body part, and the length of the sacculus part is 18-25cm, so that the urethral catheter can adapt to the length of the urethra of the human body.
The expansion saccule is coated outside the saccule part and comprises a spherical part far away from one end of the guide seat and a columnar part close to one end of the guide seat, and the ratio of the wall thickness of the spherical part to the wall thickness of the columnar part is 1: 1.5-2.
The expansion balloon comprises two parts, wherein one part is a spherical part used for fixing the expansion guide, the other part is a columnar part used for expanding the urethral wall, the expansion shape of the expansion balloon is in a trumpet shape, the front part is thick, the rear part is thin, the spherical part is used for being clamped in the bladder to prevent falling off, and the columnar part only can expand the urethra.
The inner diameter of the sleeve is larger than the outer diameter of the introducer body, and the outer diameter of the sleeve is smaller than the diameter of the urethral opening. After the gas in the expansion saccule is released, when the device is used, the sleeve is wrapped in the catheter, the front end of the catheter is hemispherical, the catheter is supported by the sleeve and slides on the main body of the introducer, and the catheter and the sleeve are relatively static.
The introducer body has a diameter less than the diameter of the urethral catheterization bore.
The guide device comprises a guide device seat, a guide device seat and a guide device, wherein the guide device seat comprises a guide device seat lower part, a guide device seat upper part and a sleeve seat sleeved on the guide device seat upper part, one side of the sleeve seat close to the guide device main body is provided with a round hole matched with the diameter of the main body, and the diameter of the round hole is smaller than that of the sleeve. The sleeve seat and the upper part of the guide seat can slide relatively, the guide main body passes through the round hole and is fixed with the upper part of the guide seat, when the sleeve seat slides relative to the upper part of the guide seat, the sleeve is pushed to move forwards, and the outer diameter sizes of the guide seat and the sleeve seat are larger, so that the expansion guide is convenient to operate.
Preferably, the outer surface of the upper part of the guide seat is provided with a first thread, and the inner surface of the sleeve seat is provided with a second thread matched with the first thread. The sleeve seat moves relative to the upper part of the guide seat through the threads, the advancing sliding sleeve can be effectively limited, the advancing sliding sleeve has the resetting trend under the reaction of the expansion body, and an operator can vacate two hands to operate the catheter after limitation.
The inflation device is communicated with the expansion sacculus through a gas channel, and the gas channel is provided with a switch valve at the lower part of the guide device seat. The switch valve controls the inflation and release of the gas in the expansion balloon.
The inflation device is an inflation sacculus, one end of the sacculus, which is far away from the guide device seat, is provided with a pressure release valve, and the pressure release valve is matched with a switch valve to release and expand the gas in the sacculus.
The utility model has the advantages and positive effects that: due to the adoption of the technical scheme, a new mode is provided for the intubation of the catheter, the intubation resistance is small, and the pain of a patient is small.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a schematic view of the structure of the expansion guide
FIG. 3 is a schematic view of the structure at A in FIG. 2
In the figure:
1. introducer body 2, catheter 3, and introducer holder
4. Bushing 5, inflator 11, spherical portion
12. Columnar part 13, body part 21, and urethral catheterization hole
31. Lower part 32 of guide seat, upper part 33 of guide seat, sleeve seat
34. On-off valve 51, relief valve
Detailed Description
As shown in fig. 1-3, the utility model discloses
The utility model provides a catheter, includes pipe 2 and expansion guide 1, the one end of pipe 2 is equipped with catheterization hole 21, pipe 2 cover is outside in expansion guide 1, the expansion guide includes guide main part 1, overlaps in sleeve pipe 4, the expansion sacculus of guide main part 1 outside, guide seat 3 and aerating device 5, guide main part 1 includes main part 13 and sacculus portion, and the expansion sacculus sets up in the sacculus portion of guide main part, and the length of main part 13, the length of pipe 2 and the length of sleeve pipe 4 cooperate, the one end that sacculus portion was kept away from to main part 13 links to each other with guide seat 3, the one end that main part 13 was kept away from to guide seat 3 is equipped with aerating device 5, aerating device 5 is linked together with the expansion sacculus.
The expansion balloon is coated outside the balloon part and comprises a spherical part 11 far away from one end of the guide seat and a columnar part 12 close to one end of the guide seat, and the ratio of the wall thickness of the spherical part 11 to the wall thickness of the columnar part 12 is 1: 1.5.
The inner diameter of the sleeve 4 is larger than the outer diameter of the introducer body 1, and the outer diameter of the sleeve 4 is smaller than the diameter of the urethral orifice 21.
The diameter of the introducer body 1 is smaller than the diameter of the urethral catheterization hole 21.
The guide seat 3 comprises a lower part 31 of the guide seat, an upper part 32 of the guide seat and a sleeve seat 33 sleeved on the upper part of the guide seat, wherein a round hole matched with the diameter of the main body part 13 is arranged on one side of the sleeve seat 33 close to the guide main body 1, and the diameter of the round hole is smaller than that of the sleeve 4.
The outer surface of the upper part 32 of the guide seat is provided with a first thread, and the inner surface of the sleeve seat 33 is provided with a second thread matched with the first thread.
The inflation device is communicated with the dilatation balloon through a gas channel, and the gas channel is provided with a switch valve 34 at the lower part 31 of the guide seat.
The inflating device is an inflating balloon, and a pressure release valve 51 is arranged at one end of the balloon, which is far away from the guide seat 3.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. An expansion catheter, includes pipe and expansion guide, the one end of pipe is equipped with the catheterization hole, the pipe cover is outside in expansion guide, its characterized in that: the expansion guide comprises a guide main body, a sleeve sleeved outside the guide main body, an expansion balloon, a guide seat and an inflating device, wherein the guide main body comprises a main body part and a balloon part, the expansion balloon is arranged at the balloon part of the guide main body, the length of the main body part, the length of the guide tube and the length of the sleeve are matched, one end, far away from the balloon part, of the main body part is connected with the guide seat, the inflating device is arranged at one end, far away from the main body part, of the guide seat, and the inflating device is communicated with the expansion balloon.
2. The dilatation catheter of claim 1, wherein: the expansion saccule is coated outside the saccule part and comprises a spherical part far away from one end of the guide seat and a columnar part close to one end of the guide seat, and the ratio of the wall thickness of the spherical part to the wall thickness of the columnar part is 1: 1.5-2.
3. The dilatation catheter of claim 1, wherein: the inner diameter of the sleeve is larger than the outer diameter of the introducer body, and the outer diameter of the sleeve is smaller than the diameter of the urethral opening.
4. The dilatation catheter of claim 2, wherein: the introducer body has a diameter less than the diameter of the urethral catheterization bore.
5. The dilatation catheter of claim 1, wherein: the guide device comprises a guide device seat, a guide device seat and a guide device, wherein the guide device seat comprises a guide device seat lower part, a guide device seat upper part and a sleeve seat sleeved on the guide device seat upper part, one side of the sleeve seat close to the guide device main body is provided with a round hole matched with the diameter of the main body, and the diameter of the round hole is smaller than that of the sleeve.
6. The dilatation catheter of claim 5, wherein: the outer surface of the upper part of the guide seat is provided with a first thread, and the inner surface of the sleeve seat is provided with a second thread matched with the first thread.
7. The dilatation catheter of claim 5, wherein: the inflation device is communicated with the expansion sacculus through a gas channel, and the gas channel is provided with a switch valve at the lower part of the guide device seat.
8. The dilatation catheter of claim 7, wherein: the inflation device is an inflatable balloon, and a pressure release valve is arranged at one end of the balloon, which is far away from the guide seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821236501.XU CN209967369U (en) | 2018-08-02 | 2018-08-02 | Dilating catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821236501.XU CN209967369U (en) | 2018-08-02 | 2018-08-02 | Dilating catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209967369U true CN209967369U (en) | 2020-01-21 |
Family
ID=69249619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821236501.XU Active CN209967369U (en) | 2018-08-02 | 2018-08-02 | Dilating catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209967369U (en) |
-
2018
- 2018-08-02 CN CN201821236501.XU patent/CN209967369U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |