WO2018209996A1

WO2018209996A1 - Urinary catheter capable of eliminating block

Info

Publication number: WO2018209996A1
Application number: PCT/CN2018/073051
Authority: WO
Inventors: 董东生
Original assignee: 威海吉威重症医疗制品有限公司
Priority date: 2017-05-17
Filing date: 2018-01-17
Publication date: 2018-11-22
Also published as: CN107693924A

Abstract

A urinary catheter capable of eliminating a block. A urinary catheter wall between an inlet (1301) of the inner cavity of the urinary catheter and an inlet (1302) of the outer cavity and/or the region close to a urine inlet (130) is provided with at least one external liquid outlet (20); the external liquid outlet (20) communicates with an external liquid inlet (22) at the tail part (14) of the urinary catheter by means of an external liquid pathway (21) on the urinary catheter wall; the tail part (14) of the urinary catheter is provided with a peristaltic pump in coordination with output of urine and input of external liquid. According to the urinary catheter capable of eliminating a block, the liquid ejected from the external liquid outlet (20) or a dredging wire (77) doing reciprocating motion can tear or crush a block (33) so as to relieve and avoid the block of the urinary catheter.

Description

Blockage-eliminating catheter

Technical field

The invention relates to a occlusion elimination type urinary catheter, belonging to the technical field of medical instruments.

Background technique

The urinary catheter is the most common medical device in the clinic. After being placed into the human body, the urine can be drained from the bladder to the outside of the body. It can be taken out after the primary urine is drained, or it can be left for long-term drainage.

During the indwelling of the catheter, there may be a problem of poor drainage, which is usually called clogging of the catheter. Clinically, the obstruction of the catheter is usually understood as the blockage of the lumen of the catheter, but the essence is the blockage of the urine inlet. The way the guide wire dredges the lumen of the catheter is not effective; the other method is vacuum suction, which is repeatedly sucked by a common syringe. Although it has a certain effect, the operation is cumbersome, and the connection between the catheter and the drainage bag needs to be frequently opened. Contamination at the junction of the urinary catheter and the drainage bag is an important cause of contamination in the catheter lumen and retrograde infection of the lower urinary tract. This method usually fails when the urine inlet is severely blocked; if the blockage cannot be eliminated, the catheter needs to be removed. At the same time, the obstruction embedded in the urine inlet is taken out, and the catheter having a larger inner diameter is re-inserted, which brings great pain to the patient.

If the blood clot, protein mass and other foreign substances in the bladder that may cause blockage, if not removed in time, it can become a medium for bacteria and other microorganisms, increasing the risk of bladder infection.

Summary of the invention

The present invention provides a occlusion-eliminating catheter for eliminating clogging of the urine inlet during indwelling of the catheter and for removing foreign matter in the bladder.

The object of the invention is achieved in this way:

The utility model relates to a clogging elimination type urinary catheter, which is a hollow main body pipeline which is composed of a solid material having an inner surface and an outer surface, and the pipeline is hollow as a lumen of the urinary catheter, including a head which enters the bladder when in use, and is left at the tail of the external body. And connecting the middle portion of the head and the tail, the head is provided with a urine inlet, and the tail is provided with a urine outlet; since the catheter has a wall thickness, the urine inlet has two openings, and the inner surface opening is an internal cavity inlet, immediately adjacent The lumen of the catheter; the opening of the outer surface is the inlet of the external cavity, usually in close proximity to the bladder cavity, and at least one external fluid is provided on the wall between the inlet of the catheter lumen and the inlet of the external cavity and or adjacent to the inlet of the urine. An outlet; the external liquid outlet communicates with an external liquid inlet at the tail of the catheter through an external fluid passage on the wall of the catheter; the region adjacent to the inlet of the urine refers to a liquid in the outlet of the external liquid opened in the region, The liquid streamline can enter the urine inlet or tangential urine inlet.

The urine inlet of the catheter head is a side opening, and at least one external liquid outlet is provided at the bottom of the side opening urine inlet tube wall.

Alternatively, at least one side of the side opening urine inlet tube wall is provided with at least one external liquid outlet when the urine inlet of the catheter head is open to the side.

Alternatively, when the urine inlet of the catheter head is open to the side, at least one external liquid outlet is provided at the top of the side opening urine inlet tube wall.

Alternatively, when the urine inlet of the catheter head is open to the side, the inner lumen of the side opening of the urine inlet is provided with at least one external liquid outlet opposite the inner surface of the catheter, from the outside The liquid stream exiting the liquid outlet directly faces the urine inlet.

Alternatively, when the urine inlet of the catheter head is open at the top end, at least one external liquid outlet is provided on the wall between the top outer chamber inlet and the top inner chamber inlet.

Alternatively, when the urine inlet of the catheter head is open at the top end, at least one slit is provided in the wall between the top outer chamber inlet and the top inner chamber inlet, and at least one of the bottom wall of the gap is provided An external liquid outlet.

According to the above-described clogging-eliminating type urinary catheter, the external liquid outlet has a hollow injection member built therein, and the external liquid enters the injection chamber inner chamber via the external liquid passage and is emitted from the injection port.

The material of the catheter is mostly flexible. If the opening on the catheter serves as an external liquid outlet, it is difficult to unify the fine shape, direction, and dimensional accuracy. The independent injection part of the molded molding system can ensure the reliability of the jet, and can be made of a material having a hardness exceeding that of the urinary catheter, and can be disposed in an external liquid passage close to the external liquid outlet by using an interference fit; The inlaid component is fused in a vulcanization or other manner of molding of the catheter head.

Another configuration is to house at least one guide wire in the external fluid passage. Under this scheme, the external liquid outlet becomes the guide wire outlet, located on the wall between the inlet of the catheter lumen and the inlet of the external cavity and or adjacent to the urine. The area of the lumen entrance.

The area adjacent to the entrance of the urine lumen means that when the urine flows from the inlet of the urine lumen into the lumen of the catheter, the guide wire extending from the external liquid outlet of the area can contact the urine flow and be sheared; All or part of the wire is located in the external liquid passage, the head of the sparse wire is located in the outer liquid outlet area, the tail of the sparse wire is located in the inlet area of the foreign liquid, and a part of the tail of the sparse wire is placed outside the inlet of the foreign liquid, and the end of the tail of the sparse wire is connected with an external force. component.

When the urine inlet is completely or partially blocked by blood clots, protein agglomerates, etc. in the bladder, and the urine cannot be or is difficult to drain to the outside of the body, on the wall of the catheter between the inlet of the lumen and the entrance of the external cavity and or adjacent to the urine The external liquid outlet in the region of the entrance of the lumen, that is, the sparse guide wire protruding from the outlet of the spasm wire, has one or more reciprocating motions of the tip of the head, repeated shocks, crushing, tearing or causing the blockage of the urine inlet. The deformation moves, driving away from the urine inlet, eliminating or mitigating clogging of the urine inlet, which means that the deformed or broken plug is from the urine inlet into the lumen of the catheter or is pushed out of the urine. The entrance returns to the bladder cavity in two situations.

In order to avoid the effect of the contact area being too small to cause damage to the blockage due to the excessively small contact head tip, the tip of the guide wire head may be spiral, ring-shaped, etc., to increase the contact area; It can be thicker than the wire body or connect the terminal with large connection area. The terminal grooming part should be soft to avoid the damage that may occur when traveling in the urethra; the volume should not be too large, otherwise the effect of urine drainage will be affected.

Further, the spasm guide wire is hollow, and the outer opening of the inner cavity of the hollow spasm wire is disposed at the end of the tail of the sparse guide wire, and at least one inner opening is provided at the top end of the sparse guide wire.

The top of the dredging wire head is provided with at least one inner opening, and the external liquid can be injected into the inner cavity of the hollow dredging wire from the outer opening of the inner cavity of the hollow spasm wire, and is ejected from the inner opening at the tip end of the sparse guide wire. When the tip portion reciprocates at the urine inlet, the force of the impact destroying the blockage increases the destructive force of the liquid streamline; and when the hollow sparse guide wire lumen is provided with a plurality of lateral openings at a position close to the tip end of the sparse guide wire head, A certain pressure of liquid, such as sterile physiological saline, is emitted from the lateral opening, and impacts the blockage that may be incarcerated on the urine inlet from multiple directions, thereby achieving a more ideal blocking and grooming effect.

According to the above-mentioned occlusion-eliminating catheter, a part of the main branch of the drainage main branch corresponding to the lumen of the catheter at the end of the catheter is partially squeezed and deformable, and the pump can be recovered after the extrusion is eliminated. With a pump tube, the pumping pump tube is sleeved in a curved or vertical tube bed, and the tube bed can be directly embedded in a tube percussion pump or a tube bed on the housing of the finger peristaltic pump Inside the cavity.

This method of urinary catheter excretion and suction blockage avoids the frequent opening of the connection between the catheter and the drainage bag, reduces the risk of retrograde infection, and the associated effect of active urination can be alleviated to some extent. The bladder pressure caused by various reasons caused by low bladder pressure can also train the bladder.

A small outer diameter of the catheter also means that the inner diameter is small, and a small inner diameter is generally prone to poor drainage, and a catheter having a large outer diameter and a large inner diameter has a good drainage effect but a large outer diameter. It will bring greater urinary tract irritation and damage, which is a clinical dilemma. When using a peristaltic pump outside the catheter to assist urination, combined with the above clogging elimination design, the catheter with smaller outer diameter can be used. The tube is applied to patients who need to select a larger outer diameter catheter according to the existing experience, thereby reducing urinary tract irritation and damage caused by excessively thick catheter while ensuring smooth drainage, eliminating clogging, and removing obstruction.

Further, a part of the connecting branch main branch and the external liquid side branch at the tail of the catheter is a pumping pump tube and a pumping pump tube which are partially squeezed and deformable and can be restored after the squeeze is eliminated. The pumping and pumping two-way pump tube is sleeved in a set of curved or vertical tube beds, and the tube bed can be directly embedded in a matching rotor peristaltic pump or finger-like peristaltic pump shell The tube bed on the body receives the lumen.

The external liquid pumping and urine pumping are synchronous or alternate, which significantly reduces the steps of clinical operation, reduces the workload of medical staff, and achieves an excellent catheter blockage elimination and blockage removal effect; In the internal urinary catheter occlusion experiment, 200 ml of the whole blood clot was placed into the artificial bladder cavity, and completely cleared to the outside of the catheter within half an hour. Although the whole blood clot that is extremely challenging and far exceeds the clinical common clot volume, the peristaltic pump is used. Attraction effect, a part of the blood clot is inhaled between the lumen entrance of the urine inlet of the catheter and the entrance of the external cavity, and the external liquid such as physiological saline and or the guide wire impacts the part of the blood clot into the lumen of the catheter to be sucked out. This process was repeated continuously, and the final 200 ml whole huge blood clot was completely removed.

The invention has the beneficial effects that the external force such as flowing liquid and or the guide wire is applied to the blockage at the inlet of the urine, crushing, tearing or deforming the movement to drive off the urine inlet to eliminate the blockage. Combined with the peristaltic pump, it can be operated continuously to completely remove the blockage.

DRAWINGS

Figure 1: Schematic diagram of the structure of an existing catheter;

Figure 2: Schematic diagram of a large clot blocking the urine inlet of the existing catheter;

Figure 3: Schematic diagram of the urine inlet of a plurality of blood clots of the existing catheter;

Figure 4: Schematic diagram of the ejection of liquid from a syringe to destroy blood clots;

Figure 5 is a schematic view showing the structure of the present invention in Embodiment 1;

Figure 6 is a schematic view showing the destruction of blood clots in the urine inlet in the first embodiment of the present invention;

Figure 7 is a schematic view showing the position of the external liquid outlet in the second embodiment of the present invention;

Figure 8 is a schematic view showing the position of the external liquid outlet in the third embodiment of the present invention;

Figure 9 is a schematic view showing the position of the external liquid outlet in the fourth embodiment of the present invention;

Figure 10 is a schematic view showing the position and passage structure of the external liquid outlet in the fourth embodiment of the present invention;

Figure 11 is a schematic view showing the position of the external liquid outlet in the fifth embodiment of the present invention;

Figure 12 is a schematic view showing the external liquid outlet of the present invention in Example 6;

Figure 13 is a schematic view showing the position of a foreign liquid ejecting member in Embodiment 6 of the present invention;

Figure 14 is a schematic view showing the position of a foreign liquid ejecting member in Embodiment 7 of the present invention;

Figure 15 is a schematic view showing the position of the external liquid outlet in the eighth embodiment of the present invention;

Figure 16: Schematic diagram of the external liquid outlet position of the present invention in Example 9;

Figure 17 is a schematic view showing the structure of the present invention in Embodiment 10;

Figure 18 is a schematic view showing the structure of a hollow sparse guide wire in the eleventh embodiment of the present invention;

Figure 19 is a schematic view showing the liquid outlet of the hollow dredging wire in the embodiment 12 of the present invention;

Figure 20 is a schematic view showing the structure of the tail of the wire in the embodiment 13 of the present invention;

Figure 21 is a schematic view showing the liquid ejection of the outer gap of the wire in the embodiment 14 of the present invention;

Figure 22 is a schematic view showing the structure of the tail of the wire in the embodiment 15 of the present invention;

Figure 23 is a schematic view showing the tail of a sparse guide wire provided with an external liquid inlet in the embodiment 16 of the present invention;

Figure 24 is a schematic view showing the structure of a pump tube, a tube bed, and a peristaltic pump in Embodiment 17 of the present invention;

Figure 25 is a schematic view showing the use state of the pump tube, the tube bed and the peristaltic pump in the embodiment 17 of the present invention;

Figure 26 is a schematic view showing the structure of a pump tube, a tube bed, and a peristaltic pump in Embodiment 18 of the present invention;

Figure 27 is a schematic view showing the rotary handle of the pump tube, the tube bed and the peristaltic pump in the embodiment 19 of the present invention;

Figure 28 is a schematic view showing the structure of a pump tube, an integrated tube bed, and a peristaltic pump in Embodiment 20 of the present invention;

Figure 29 is a schematic view showing the structure of a pump tube, an integrated tube bed, and a peristaltic pump in Embodiment 21 of the present invention;

In the figure: 0. bladder; 00. bladder cavity; 10. catheter lumen; 11. catheter inner surface; 12. catheter outer surface; 13. catheter head; 130. urine inlet; 130a. The bottom of the urine inlet tube wall; 130b. the side of the urine inlet tube wall; 130c. the top of the urine inlet tube wall; 130d. the inner lumen portion of the lumen inlet opposite the lumen; 130e. the urine inlet is the tip opening 1301. lumen inlet; 1302. lumen inlet; 131. urinary catheter tip; 1318. lumen wall between the tip outer lumen inlet and the tip lumen inlet; 1319. gap; 132. bladder fixation balloon; 1322. Bladder fixed capsule filling side branch external opening; 14. catheter tail; 140. urine outlet; 141. drainage main branch; 144. external liquid side branch; 145. annular boss; 146. The middle portion of the catheter; 2. the one-way valve; 20, 20a, 20b, 20c, 20d, 20e, 20f. the external liquid outlet; 21. the external liquid passage; the 22. the external liquid inlet; 33, 33a, 33b. 40. spray member; 400. spray member inner chamber; 41. spray member tip; 410. spray member outlet; 42. spray member bottom; 55. cap; 56. cap guide wire; Body; 660. rotor; 661. roller; 662. tube bed receiving chamber; 663. driving rotating handle; 664. finger parts; 67. pump body cover; 68. pumping pump tube; 69. tube bed; One-piece tube bed; 70. pumping pump tube; 77. dredging wire; 770. sparse wire tip opening; 771. sparse wire lumen; 772. sparse wire head; 773. sparse wire tail; External force receiving component; 780. sparse wire inner cavity opening; 781. external force receiving component hollow; 9. syringe; 90. jet emerging from the syringe.

detailed description

Embodiment 1: As shown in FIG. 1 , a conventional clinically common urinary catheter is a hollow main body tube composed of a solid material having an inner surface 11 and an outer surface 12 , and the tube is hollow as a urinary catheter lumen 10 , including use At the time of entering the head 13 of the bladder 0, leaving the tail portion 14 outside the body and the intermediate portion 15 connecting the head portion 13 and the tail portion 14, the head portion 13 is provided with a urine inlet 130, and the tail portion 14 is provided with a urine outlet 140; The tube has a wall thickness, the urine inlet 130 has two openings, the inner surface opening is a lumen inlet 1301, adjacent to the catheter lumen 10; the outer surface opening is an external lumen inlet 1302, which is usually in close proximity to the bladder lumen 00; the catheter During the indwelling period, the urine inlet 130 is easily blocked by various agglomerates, affecting the drainage, as shown in Fig. 2, being blocked by a large blood clot 33; sometimes the mass is small, but a plurality of agglomerates will form a bridge. Locking at the urine inlet 130 also prevents urine from flowing out, as shown in Figure 3 by a plurality of blood clots 33.

Tests have shown that the blood clot can be broken or even cut by a finer liquid jet. As shown in Figure 4, the jet 90 pushed out by the hand-held syringe 9 cuts and clots the blood clot 33.

As shown in Fig. 5, the present invention is provided with an external liquid outlet 20 on the wall between the catheter lumen inlet 1301 and the external lumen inlet 1302; the external fluid outlet passes through the external fluid passage 21 and the catheter on the wall of the catheter. The foreign liquid inlet 22 of the urinary catheter tail 14 is in communication; the foreign liquid inlet 22 is located on the external liquid side branch 144 of the urinary catheter tail 14 and can be closed by a seal such as the one-way valve 2.

As an alternative to the present embodiment, an external liquid outlet 20 may also be provided in the area adjacent to or adjacent to the urine inlet 130, the area adjacent to the urine inlet 130 being when the liquid in the external liquid outlet 20 opened in this area is ejected. The liquid streamline can enter the urine inlet 130 or the tangential urine inlet 130 as described in Example 4.

When the urine inlet 130 is completely or partially blocked by a blood clot, protein mass or the like from the bladder, and urine cannot be or is difficult to drain to the outside, the liquid is injected from the external liquid inlet 22, and the liquid is ejected from the external liquid outlet 20. The high velocity streamline breaks, tears, deforms, or displaces the blockage of the urine inlet 130, dislodges the urine inlet 130, and eliminates or reduces clogging of the urine inlet 130, which dislodges the urine inlet 130. It refers to two situations in which the debris enters the catheter lumen 10 from the urine inlet 130 or is pushed out of the urine inlet 130 to return to the bladder cavity 00;

Figure 6 shows that the liquid jet shown by the arrow cuts a blood clot 33 into two

portions

33a, 33b, wherein 33b enters the

catheter lumen

10, and 33a can be pushed out of the urine inlet 130 back into the bladder cavity 00.

Embodiment 2: As shown in FIG. 7, when the urine inlet 130 of the urinary catheter head 13 is open to the side, the bottom 130a of the side opening of the urine inlet 130 is provided with two external liquid outlets 20a, two The jet at the exit will multiply the damage to the blockage, and the direction of the liquid jet is like an arrow.

Embodiment 3: As shown in FIG. 8, when the urine inlet 130 of the urinary catheter head 13 is side-opened, the side portion 130b of the side opening urine inlet 130 is provided with an external liquid outlet 20b, a liquid jet. The direction is like an arrow.

Embodiment 4: As shown in FIG. 9 and FIG. 10, the urine inlet 130 of the catheter head 13 is open to the side, and the top 130c of the wall of the urine inlet 130 of the side opening is provided with an external liquid outlet 20c, liquid The direction of the jet is like an arrow.

Embodiment 5: As shown in Fig. 11, the urine inlet 130 of the urinary catheter head 13 is a side opening, and the urinary catheter inner surface portion 130d of the side opening urine inlet 130 is provided with a foreign body. The liquid outlet 20d, the liquid flow line emitted from the external liquid outlet 20d directly faces the urine inlet 130, and the liquid jet direction is an arrow.

Embodiment 6: As shown in FIGS. 12 and 13, the urine inlet 130 of the catheter head 13 is side-opened, and the lumen inlet 1301 of the side opening of the urine inlet 130 is opposite to the catheter inner surface portion 130d. There is a conical hollow injection member 40, the tip end 41 is bored into the catheter lumen 10, the bottom portion 42 is located in the external fluid passage 21 in the wall of the catheter, and the extra fluid is ejected from the ejection member outlet 410 via the ejection member lumen 400. The arrow indicates the direction of the jet. The material of the catheter is mostly flexible. If the opening on the catheter is used as the external liquid outlet, the fine shape, direction and dimensional accuracy are difficult to be unified, and the independent injection component 40 of the molded molding system can ensure the reliability of the jet. Alternatively, it may be made of a material having a hardness exceeding that of the catheter, and may be disposed in the external liquid passage 21 close to the external liquid outlet 20 by an interference fit; or may be used as a vulcanization or other mode of the inlaid member at the head 13 of the catheter. Fusion connection in plastic molding.

Embodiment 7: As shown in Fig. 14, a tapered hollow jetting member 40 is located at the bottom portion 130a of the wall of the side opening urine inlet 130, and the direction of the liquid jet is as an arrow.

Embodiment 8: As shown in FIG. 15, the urine inlet 130 of the catheter head 13 is a tip opening 130e, and at least one of the tube wall end faces 1318 between the tip outer chamber inlet 1302 and the top end chamber inlet 1301 is provided. The external liquid outlet 20e, in order to avoid damage to the urethral intima of the head tip opening 130e when the catheter is placed, a flexible blunt cap 55 can be added to close the tip opening 130e, and the cap guide 56 is The cap body 55 is connected into the lumen 10 of the catheter, and a part is placed outside the catheter (not shown). After the catheter is successfully inserted, the cap guide wire 56 is pulled to drive the cap body into the lumen 10 of the catheter until it is removed. The liquid jet direction of this embodiment is an arrow.

Embodiment 9: As shown in Fig. 16, the urine inlet 130 of the catheter head 13 is a tip opening 130e, and two end faces 1318 of the tube wall between the tip outer chamber inlet 1302 and the top chamber inlet 1301 are provided. The slit 1319 is provided with a foreign liquid outlet 20f on the wall of each of the bottoms of each of the slits 1319, and the direction of the liquid jet is an arrow.

Embodiment 10: As shown in FIG. 17, at least one sparging wire 77 is accommodated in the external liquid passage 21, and the external liquid outlet 20 is a sparse wire outlet, and the spasm wire outlet is located between the catheter lumen inlet 1301 and the external cavity inlet 1302. The area on the tube wall and or adjacent to the urine lumen inlet 1301.

The region adjacent to the urine lumen inlet 1301 means that when the urine flows from the urine lumen inlet 1301 into the catheter lumen 10, the guide wire 77 extending from the foreign liquid outlet 20 of the region, that is, the guide wire outlet can be Contact with the urine flow and shearing; the guide wire 77 is wholly or mostly located in the foreign liquid passage 21, the sparse wire head 772 is located in the outer liquid outlet 20 region, the sparse wire tail 773 is located in the foreign liquid inlet region, and the guide wire tail portion 773 is A portion is placed outside the inlet of the foreign liquid, and an external force receiving member 78 is connected to the end of the tail 773 of the sparse wire. The external force receiving member 78 is pushed and pulled by hand to drive the reciprocating wire to reciprocate.

When the urine inlet 130 is completely or partially blocked by blood clots, protein agglomerates, etc. in the bladder, and the urine cannot be or is difficult to drain to the outside of the body, it is located on the wall between the catheter lumen inlet 1301 and the external lumen inlet 1302 and or The foreign liquid outlet 20 adjacent to the region of the urine lumen inlet 1301, that is, the reciprocating motion of the tip of the sparse wire head 772 extending in the outlet of the spasm wire, breaks and tears the blockage of the urine inlet 130. Or moving it to move away from the urine inlet 130, eliminating or mitigating clogging of the urine inlet 130, which means that the deformed or broken plug is from the urine inlet 130 into the catheter. The chamber 10 is either pushed out of the urine inlet 130 and returned to the bladder chamber 00.

In order to avoid the effect of the contact area being too small due to the excessively small contact area of the wire guide head 772, the damage of the blockage may be affected. The tip of the wire guide head 772 may be a spiral shape or a ring-shaped curved shape to increase the contact area. The top of the 772 can also be thickened or connected to the terminal with a larger area. The terminal grooming part should be soft to avoid damage that may occur when traveling in the urethra, and the volume should not be too large, otherwise the effect of urine drainage will be affected.

Embodiment 11: As shown in Fig. 18, the spasm wire 77 is hollow, and an inner opening 770 is provided at the top end of the hollow sparse wire head 772. The foreign liquid can be ejected from the inner opening 770 at the tip of the sparse wire head 772. When the tip end portion of the sparse wire head 772 reciprocates at the urine inlet 130, the liquid flow line increases the force of the impact destroying the blockage.

Embodiment 12: As shown in FIG. 19, the hollow cavity guide wire 77 inner cavity 771 is further provided with a plurality of lateral openings at a position close to the tip end of the sparse guide wire head 772, and a certain pressure of liquid such as sterile physiological saline is from a plurality of lateral directions. The opening is ejected, and the blockage which may be incarcerated on the urine inlet 130 is impacted from a plurality of directions, thereby achieving a more ideal blocking and guiding effect, and the direction of the arrow in the figure indicates the direction of the liquid jet.

Embodiment 13: As shown in FIG. 20, the external liquid can be injected into the cavity 771 of the hollow guide wire 77 from the outer opening 780 of the lumen 771 of the hollow guide wire 77, and the outer opening 780 of the lumen 771 of the hollow guide wire 77 is located at the end of the tail 773 of the guide wire. On the hollow external force receiving member 78, the external force receiving member 78 can be pushed and pulled by hand to drive the guiding wire 77 to reciprocate and the external liquid can be injected simultaneously.

Embodiment 14: As shown in FIG. 21, the urine inlet 130 of the urinary catheter head 13 is a side opening, and the bottom 130a of the wall of the urine inlet 130 of the side opening is provided with an external liquid outlet 20, which is provided with a guide wire 77. The gap between the guide wire 77 and the inner surface of the foreign liquid passage 21 serves as an external liquid flow path, and the arrow indicates the direction in which the liquid flow direction is ejected. This design can also be used for the elimination of the blockage.

Embodiment 15: As shown in FIG. 22, the end of the external liquid side branch 144 is provided with a finger-operated annular boss 145, and the guide wire tail portion 773 in the external liquid passage 21 inside the external liquid side branch 144 is coupled to a return spring 146. The return spring 146 is sleeved outside the guide wire tail portion 773, and an external force receiving member 78 is connected to the end of the sparse wire tail portion 773. The annular boss 145 is held by two fingers such as the index finger and the middle finger with one hand, and the thumb pushes the external force receiving member 78 to guide the wire. 77 moves in the direction of the bladder 0, relaxes the thumb pushing pressure, and the return spring 146 can automatically push the spasm wire 77 back in reverse. Such reciprocating movement of the guide wire 77 is more convenient and labor-saving.

Embodiment 16: As shown in FIG. 23, on the basis of Embodiment 15 provided with a one-hand operation structure, the external force receiving member 78 connected to the end of the sparse wire tail portion 773 is connected to the hollow cavity 781 and is connected to the hollow cavity guide wire 77. The external opening 780 is for the external opening 780 of the guide wire lumen, and the external liquid is connected, and the jet impact can be performed while the guide wire is mechanically guided, and the opening can be closed by the check valve 2.

Embodiment 17: As shown in Figs. 24 and 25, a part of the tubing of the drainage main branch 141 corresponding to the lumen 8 of the catheter catheter 14 is partially compressed and deformable and can be restored after being squeezed. The pumping pump tube 68 is sleeved in a curved or vertical tube bed 69, and the tube bed 69 can be directly embedded in the matching rotor peristaltic pump or finger peristaltic pump. The tube bed on the housing is received in the chamber 662, and the pump body cover 67 is closed. The arrow shown in Fig. 25 is the flow direction of the urine.

This way of urinary catheter urinary tract urination and suction blockage avoids the frequent opening of the connection between the catheter and the drainage bag, reducing the risk of retrograde infection, and the effect of active urination can also alleviate to some extent The cause of bladder pressure is too low to cause urination weakness, but also can train the bladder.

Embodiment 18: As shown in FIG. 26, the driving force of the peristaltic pump rotor 660 can be driven not only electric but also manually, and the rotary handle 663 can be driven to drive the peristaltic pump.

Embodiment 19: As shown in Fig. 27, a part of the tube connecting the drainage main branch 141 and the external liquid side branch 144 of the catheter tail portion 14 is partially squeezed and deformable closed, and the pump can be recovered after the squeeze is eliminated. The pump tube 68 is used in conjunction with the pumping pump tube 70 to provide a better occlusion relief effect on the catheter urine inlet 130, the arrow being the direction of urine flow.

Embodiment 20: As shown in FIG. 28, for convenience of use and cost saving, the pumping pump tube 68 for connecting the drainage main branch 141 and the external liquid side branch 144 of the catheter tail portion 14 is common to the pumping pump tube 70. It is disposed around the roller 661 of an integrated rotor peristaltic pump, and the roller 661 disengaged from the pumping pump tube 68 acts on the pumping pump tube 70 to alternately pump and pump the pumping pump. 70 and the pumping pump tube 68 are in the integrated tube bed 690. The integrated rotor peristaltic pump body is provided with a matching integrated tube bed 690 receiving chamber, and the arrow indicates the direction of liquid flow.

Embodiment 21: As shown in FIG. 29, the integrated peristaltic pump is a finger-shaped peristaltic pump, and the pump body 66 is provided with a plurality of finger members 664, and the finger members 664 are sequentially squeezed and arranged for pumping on opposite sides thereof. The pump tube 70 and the pumping pump tube 68 are simultaneously caused to be pumped out, and the pumping pump tube 70 and the pumping pump tube 68 are in the integrated tube bed 690, and the arrows indicate the direction of liquid flow.

External fluid pumping and urine pumping simultaneously, significantly reducing the number of clinical procedures, reducing the workload of medical staff, and the ideal elimination of urinary catheter obstruction and removal of clogging; in vitro simulated bladder guidance In the urinary catheter occlusion experiment, 200 ml of the whole blood clot was placed into the artificial bladder cavity, and completely removed to the catheter outside the body within half an hour. Although the test used a whole blood clot that was far beyond the clinical common clot volume, a part of the blood clot was affected by the peristaltic pump attraction. Between the lumen inlet 1301 of the urine inlet 130 of the catheter and the inlet 1302 of the external cavity, a foreign liquid such as physiological saline or a guide wire 77 is crushed to crush the blood clot into the lumen of the catheter 10, and is continuously removed. This process was repeated and the final 200 ml whole huge blood clot was completely removed.

Claims

A clogging-eliminating catheter having a hollow body tube composed of a solid material having an inner surface (11) and an outer surface (12), the tube being hollow as a lumen of the catheter (10), including entering the bladder when in use The head (13) of (0) is left in the outer tail portion (14) and the intermediate portion (15) connecting the head portion (13) and the tail portion (14), and the head is provided with a urine inlet (130), and the tail portion is provided. There is a urine outlet (140); because the catheter has a wall thickness, the urine inlet (130) has two openings, the inner surface opening is the lumen inlet (1301), adjacent to the catheter lumen (10); the outer surface inlet In use, usually adjacent to the bladder lumen (00), is the external lumen inlet (1302), characterized by a tube wall between the catheter lumen inlet (1301) and the lumen inlet (1302) and or adjacent to the urine inlet. The area of (130) is provided with at least one external liquid outlet (20); the external liquid outlet (20) passes through the external liquid passage (21) on the wall of the catheter and the external liquid inlet (22) of the catheter tail (14) Connected.
A occlusion-eliminating urinary catheter according to claim 1, wherein the urine inlet (130) of the urinary catheter head (13) is a side opening, and the side opening urine inlet (130) tube The bottom (130a) of the wall is provided with at least one external liquid outlet (20).
A occlusion-eliminating urinary catheter according to claim 1, wherein the urine inlet (130) of the urinary catheter head (13) is a side opening, and the side opening urine inlet (130) tube At least one side (130b) of the wall is provided with at least one external liquid outlet (20b).
A occlusion-eliminating urinary catheter according to claim 1, wherein the urine inlet (130) of the urinary catheter head (13) is a side opening, and the side opening urine inlet (130) tube The top of the wall (130c) is provided with at least one external liquid outlet (20c).
A occlusion-eliminating urinary catheter according to claim 1, wherein the urine inlet (130) of the urinary catheter head (13) is a side opening, and the side opening of the urine inlet (130) The inner lumen portion (130d) of the lumen inlet (1301) is provided with at least one external liquid outlet (20d), and the liquid flow line emerging from the external liquid outlet (20d) directly faces the urine inlet (130). ).
A occlusion-eliminating urinary catheter according to claim 1, wherein the urine inlet (130) of the urinary catheter head (13) is a apical opening (130e), and the apical external cavity inlet (1302) At least one external liquid outlet (20e) is provided on the wall of the tube between the top lumen inlet (1301).
A occlusion-eliminating urinary catheter according to claim 1, wherein the urine inlet (130) of the urinary catheter head (13) is a apical opening (130e), and the apical external cavity inlet (1302) At least one slit (1319) is provided in the tube wall between the top inner chamber inlet (1301), and at least one external liquid outlet (20f) is provided on the tube wall at the bottom of the slit (1319).
A occlusion-eliminating urinary catheter according to any one of claims 1 to 7, characterized in that the external liquid outlet (20) has a hollow injection member (40) built therein, and the external liquid is supplied via the external liquid passage (21). After entering the ejection member inner chamber (400), it is ejected from the ejection member outlet (410).
A occlusion-eliminating urinary catheter according to claim 1, wherein at least one sparging wire (77) is accommodated in the foreign liquid passage (21), and the external liquid outlet (20) is a sparse guide wire (77) outlet. The area on the wall between the catheter lumen inlet (1301) and the lumen inlet (1302) and or adjacent to the urine lumen inlet (1301).
A occlusion-eliminating catheter according to claim 9, wherein the spasm wire (77) is hollow, and the outer opening (780) of the hollow cavity (77) lumen (771) is provided at the tail of the sparse wire ( At the end of the 773), at least one inner opening (770) is provided adjacent the tip of the sparse wire head (772).
A occlusion-eliminating urinary catheter according to any one of claims 1 to 10, characterized in that a part of the line connecting the main branch (141) of the urinary catheter tail (14) is partially compressed a pumping pump tube (68) that is deformable and retractable after retraction is eliminated, and the pumping pump tube (68) is sleeved in a curved or vertical tube bed (69), 69) It can be directly embedded in the tube receiving chamber (662) on the housing of the rotor peristaltic pump or finger peristaltic pump.
A occlusion-eliminating urinary catheter according to any one of claims 1 to 10, wherein the connection between the main branch (14) and the external liquid side branch (144) of the urinary catheter tail (14) A part of the pipeline is a pumping pump tube (68) and a pumping pump tube (70) which are partially squeezed and deformable and can be restored after the squeeze is eliminated, and the pumping and pumping two pump tubes are used for pumping and pumping. Nested in a set of curved or vertical tube beds (69), the tube bed (69) can be directly embedded in a tubular pericardial pump or a tube bed receiving chamber on the housing of the finger peristaltic pump (662).