CN217854124U - Lesion fluid leading-out type medicine targeting replacement catheter - Google Patents
Lesion fluid leading-out type medicine targeting replacement catheter Download PDFInfo
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- CN217854124U CN217854124U CN202220283982.XU CN202220283982U CN217854124U CN 217854124 U CN217854124 U CN 217854124U CN 202220283982 U CN202220283982 U CN 202220283982U CN 217854124 U CN217854124 U CN 217854124U
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Abstract
The utility model provides a lesion department fluid draws formula medicine target replacement pipe, relates to the medical instrument field, including open outer pipe in front end and inner catheter, the inner catheter external diameter is less than outer pipe internal diameter, and the inner catheter is inserted and is established in outer pipe, and the inner catheter front end stretches out outer pipe front end, and outer pipe rear end is equipped with three way connection, and the inner catheter rear end is sealed to be drawn forth by three way connection's rear end. The utility model has simple structure and convenient operation, can discharge the stagnated blood in the vein at the varicose position of the body of the varicose vein patient out of the body and inject the medicine simultaneously, the medicine is fully contacted with the vessel wall, the occurrence probability of thrombus in the vessel cavity and thrombophlebitis is greatly reduced, and the treatment effect is good; when used for treating cyst diseases such as hepatic cyst, renal cyst and the like, the medicine can be injected while drawing liquid from cyst pathological changes, and the medicine is used for replacing fluid substances at the cyst pathological changes, so that the medicine has strong targeting property and good treatment effect.
Description
Technical Field
The utility model relates to the field of medical equipment, a simple structure, convenient to use are explained in detail, can replace, improve the effect of medicine with the medicine for the fluid tissue of pathological change department, and therapeutic effect is good, reduces the pathological change department fluid of the emergence probability of thrombus and draws forth formula medicine target replacement pipe.
Background
Varicose veins are known as a common disease, and the frequently encountered disease refers to the tortuosity and expansion of veins caused by blood stasis, weak vein walls and other factors. Varicose lesions are produced in veins in various parts of the body, including: varicose vein of lower limb, portal hypertension-gastric fundus esophageal varicose vein, varicocele, hemorrhoid and pelvic cavity venous stasis syndrome, etc. The current treatment of varicose veins is mainly open surgery treatment; the thermal ablation technology mainly comprises laser, microwave and radio frequency, the aim of closing blood vessels is achieved by damaging the blood vessels, the operation for treating varicose veins by the thermal ablation method is complex, normal tissues are easy to damage, the aim of closing the blood vessels by damaging the blood vessels is achieved by the thermal ablation, stagnant blood in diseased blood vessels cannot be removed in time, the blood stagnant at the varicose veins is easy to form thrombus and thrombophlebitis, and the treatment effect is poor.
The methods of treating varicose veins using sclerosing agents are generally: injecting a hardening agent into a blood vessel at a varicose lesion, wherein the hardening agent is generally selected from sodium morrhuate, phenol glycerol, lauromacrogol and other medicaments, injecting the hardening agent into the varicose vein, and then locally pressurizing and binding the varicose vein to seal the blood vessel of the vein, thereby realizing the effect of aseptic inflammation closure; the existing method for treating varicose vein by using the hardener is only suitable for patients with smaller range of pathological changes, and the blood stagnated at the varicose vein generates dilution side effect on the hardener, so that the contact area between the hardener and the vessel wall is greatly reduced, and the treatment effect is poor; also, blood stagnating in varicose veins is prone to thrombosis and thrombophlebitis, causing varicose veins in nearby blood vessels.
In cyst diseases such as hepatic cyst and renal cyst, when the cyst needs to be treated, usually the cyst is punctured and extracted under the guidance of ultrasound, but the cyst will increase soon after the fluid extraction and needs to be extracted repeatedly; the effect of injecting the therapeutic drug into the cyst after the liquid is extracted is better, but the success rate is low when professional doctors with higher technology are responsible for operation; the direct injection of the medicine to the pathological changes of the cyst has poor medicine targeting property, long treatment period and poor effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art, provide a simple structure, convenient operation, can with the blood discharge of the intravascular stasis stagnation of varicosity department external, inject the medicine into simultaneously, medicine and vascular wall fully contact, greatly reduced blood vessel intracavity thrombus and thrombophlebitis's emergence probability, the good pathological change department fluid of treatment draws out formula medicine target replacement pipe.
Another object of the utility model is to provide a to can be simultaneously to the cyst pathological change carry out the drawing and injection medicine, use the medicine to replace cyst pathological change department fluid material, the medicine target is strong, and treatment is good, and simple structure, convenient operation's pathological change department fluid draws out formula medicine target replacement pipe.
The utility model provides a technical scheme that the not enough adoption of above-mentioned prior art is:
a lesion fluid leading-out type medicine targeted replacement catheter is characterized by comprising an outer catheter and an inner catheter, wherein the front end of the outer catheter is open, the outer diameter of the inner catheter is smaller than the inner diameter of the outer catheter, the inner catheter is inserted into the outer catheter, the front end of the inner catheter extends out of the front end of the outer catheter, a three-way joint is arranged at the rear end of the outer catheter, and the rear end of the inner catheter is led out in a sealing mode through the rear end of the three-way joint.
The utility model discloses in inner catheter external diameter 0.5-15mm, outer catheter internal diameter 1-30mm, inner catheter external diameter is 0.3-0.8 times of outer catheter internal diameter, preferred 0.5-0.6 times, and inner catheter front end stretches out outer catheter front end 2-100mm, preferred 5-30mm.
The utility model discloses in three way connection's first end link to each other with outer pipe rear end, the interior pipe rear end is drawn by three way connection's second end is sealed, be equipped with the joint valve on three way connection's the third end, be equipped with the joint valve on the interior pipe rear end.
The utility model discloses in the joint valve be medical three way connection valve.
The utility model discloses in three way connection's rear end on be equipped with the connecting seat, be equipped with on the connecting seat rear side with the sealed locking cap of connecting seat screw-thread fit, sealed locking cap rear side is equipped with excessive connecting pipe, be equipped with the inner tube slide opening on the connecting seat, be equipped with on the sealed locking cap (with the interior pipe patchhole of excessive connecting pipe intercommunication), the inner tube passes in inner tube slide opening and the inner tube patchhole gets into excessive connecting pipe, the inner tube can freely slide at inner tube slide opening and inner tube patchhole, be equipped with the sealed piece of elasticity locking on the inner tube between connecting seat trailing flank and sealed locking cap. In the process of thread fit locking of the sealing locking cap and the connecting seat, the sealing locking cap and the connecting seat extrude the elastic locking sealing block, the elastic locking sealing block deforms under the action of extrusion force, and the inner conduit is locked and fixed and simultaneously sealed with the inner conduit sliding hole and the inner conduit inserting hole.
The utility model discloses in three way connection's first end link to each other with outer pipe rear end, the inner duct rear end is drawn forth by three way connection's second end is sealed, is equipped with the joint valve on three way connection's the third end, is equipped with the joint valve on the excessive connecting pipe rear end. The size of the inner conduit in the transition connecting pipe is 5-30mm.
The utility model discloses in sealed piece of elasticity locking make by rubber or silica gel material, sealed piece of elasticity locking is round platform shape, central authorities are equipped with sealed jack, when not receiving external force, the inner tube can be in sealed jack free slip, the sealed piece of elasticity locking takes place deformation when receiving external force extrusion, with inner tube locking fixed, the two can not relative slip.
The utility model discloses in the inner catheter include sealed control section and replacement injection section, sealed control section is located replacement injection section rear side, the external diameter of sealed control section is greater than the external diameter of replacement injection section (, the internal diameter of sealed control section is the same with the internal diameter of replacement injection section), the sealed control section of inner catheter is located the connecting seat and rear side thereof. Is convenient for operation and control and is not easy to deform due to stress.
The utility model discloses in outer pipe rear end be equipped with the operation control pipe, the external diameter of operation control pipe is greater than the external diameter of outer pipe, three way connection connect on the operation control pipe rear end. The operation control tube is convenient to take and control in the using process, the improvement is further realized, the operation control tube can be provided with an operation handle or a holding part, and the operation control in the using process is more facilitated.
The utility model discloses during the use, put into pathological change department through the front end of operation passageway with outer pipe and inner catheter, outer pipe front end is located the rear portion at pathological change position this moment, and the front end of inner catheter is located the middle part or the front portion at pathological change position. The injector is connected with the rear end of the inner catheter, the liquid extractor (the injector or the negative pressure drainage device) is connected with the rear end of the outer catheter through the three-way joint, the liquid at the pathological change part is extracted, meanwhile, the medicine for treating the pathological change is injected into the pathological change part, and the medicine is exchanged with the liquid at the pathological change part of the body of a patient. The utility model has simple structure and convenient operation, can discharge the stagnated blood in the vein at the varicose position of the body of the varicose vein patient out of the body and inject the medicine simultaneously, the medicine is fully contacted with the vessel wall, the occurrence probability of thrombus in the vessel cavity and thrombophlebitis is greatly reduced, and the treatment effect is good; when used for treating cyst diseases such as hepatic cyst, renal cyst and the like, the medicine can be injected while drawing liquid for cyst lesions, and the medicine is used for replacing fluid substances at the cyst lesions, so that the medicine has strong targeting property and good treatment effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the outer catheter and the fixed connecting part thereof after the outer catheter and the inner catheter are separated.
Fig. 3 is a schematic structural view of the inner catheter and the fixed connecting part thereof after the outer catheter and the inner catheter are separated.
Fig. 4 is a partial cross-sectional enlarged view of the connecting seat and the sealing cap of the present invention, which is also a partial structural cross-sectional view of embodiment 2.
Detailed Description
Example 1
The lesion fluid extraction type drug targeting replacement catheter shown in fig. 1, fig. 2 and fig. 3 comprises an outer catheter 2 with an open front end and an inner catheter 1, wherein the outer diameter of the inner catheter 1 is smaller than the inner diameter of the outer catheter 2, the outer diameter of the inner catheter 1 in the embodiment is 2mm, the inner diameter of the inner catheter 1 is 1mm, and the inner diameter of the outer catheter 2 is 4mm, and the outer diameter of the outer catheter is 5.5mm; the inner conduit 1 is inserted in the outer conduit 2, and the front end of the inner conduit 1 extends out of the front end of the outer conduit 2 by 2-30mm, preferably 5-20mm. The rear end of the outer conduit 2 is provided with a three-way joint 4, and the rear end of the inner conduit 1 is hermetically led out from the rear end of the three-way joint 4, namely the rear end part of the three-way joint is hermetically connected with the outer wall of the inner conduit. As can be seen from fig. 1 to 3, the specific structure of the sealing connection between the rear end of the three-way joint 4 and the inner conduit is as follows: the rear end of the three-way joint 4 is provided with a connecting seat 5, the rear part of the inner conduit 1 is provided with a sealing locking cap 6 which is in threaded fit connection with the connecting seat 5, and the rear end part of the three-way joint 4 is in threaded seal connection with the inner conduit 1 through the sealing locking cap 6 and the connecting seat 5. Or a sealing filler can be arranged between the rear end of the three-way joint and the outer wall of the inner conduit for sealing, or the rear end of the three-way joint and the inner conduit are bonded and sealed by using a sealing glue.
In the further improvement of the embodiment, the first end of the three-way joint 4 is connected with the rear end of the outer conduit, the rear end of the inner conduit is hermetically led out from the second end of the three-way joint, the third end of the three-way joint 4 is provided with a joint valve 7, and the rear end of the inner conduit 1 is provided with a joint valve 8; the joint valves 7 and 8 are medical three-way joint valves. As can be seen from fig. 2, the rear end of the outer catheter 2 is provided with an operation control tube 3, the outer diameter of the operation control tube 3 is larger than that of the outer catheter, and the three-way joint 4 is connected to the rear end of the operation control tube 3; the operation control tube is convenient to take and control in the using process, and an operation handle or a holding part can be arranged on the operation control tube, so that the operation control tube is more favorable for the operation in the using process. As can be seen from fig. 3, the rear end of the inner conduit is provided with an excess connection pipe 9, the outer diameter of the excess connection pipe 9 is larger than that of the inner conduit 1, the sealing locking cap 6 and the connector valve 8 are arranged on the excess connection pipe 9, and the outer diameter of the excess connection pipe is larger, so that the connection and operation of components are facilitated.
When the lesion fluid leading-out type medicine targeted replacement catheter provided by the embodiment is used, the size of a diseased part is determined through detection of a patient, the lesion fluid leading-out type medicine targeted replacement catheter with the size of the front end of the inner catheter extending out of the front end of the outer catheter matched with the size of the diseased part is selected, the front ends of the outer catheter and the inner catheter are placed in the diseased part through the operation channel, at the moment, the front end of the outer catheter is located in the rear part of the diseased part, and the front end of the inner catheter is located in the middle or front part of the diseased part. The syringe is connected with the rear end of the inner catheter through the connector valve, the liquid extractor (the syringe or the negative pressure drainage device) is connected with the rear end of the outer catheter through the connector valve and the three-way connector, and when the fluid at the pathological change position is extracted, the medicine for treating the pathological change is injected into the pathological change position, so that the medicine is exchanged with the fluid at the pathological change position of the body of a patient.
Example 2
The lesion fluid leading-out type medicine targeted replacement catheter shown in fig. 1 and 4 comprises an outer catheter 2 with an open front end and an inner catheter 1, wherein the outer diameter of the inner catheter 1 is smaller than the inner diameter of the outer catheter 2, the inner catheter is inserted into the outer catheter, the front end of the inner catheter extends out of the front end of the outer catheter, a three-way joint 4 is arranged at the rear end of the outer catheter, the first end of the three-way joint 4 is connected with the rear end of the outer catheter, the rear end of the inner catheter is led out by the second end of the three-way joint in a sealing mode, a joint valve 7 is arranged at the third end of the three-way joint 4, a joint valve is arranged at the rear end of the inner catheter, and the joint valve is a medical three-way joint valve. As can be seen from fig. 1 and 4, a second end of the three-way joint 4 is provided with a connecting seat 5, a sealing locking cap 6 in threaded fit with the connecting seat 5 is arranged on the rear side of the connecting seat 5, a transition connecting pipe 9 is arranged on the rear side of the sealing locking cap 6, and the joint valve 8 is arranged on the rear end of the transition connecting pipe 9; an inner pipe sliding hole is formed in the connecting seat 5, an inner pipe inserting hole communicated with the transition connecting pipe is formed in the sealing locking cap 6, an inner guide pipe penetrates through the inner pipe sliding hole and the inner pipe inserting hole to enter the transition connecting pipe, and the size of the inner guide pipe located in the transition connecting pipe is 5-30mm; the inner conduit can freely slide in the inner conduit sliding hole and the inner conduit inserting hole, and an elastic locking sealing block 10 is arranged on the inner conduit between the rear side face of the connecting seat and the sealing locking cap. The elastic locking sealing block 10 is made of rubber or silica gel materials, the elastic locking sealing block 10 is in a round table shape or a cylindrical shape, a sealing insertion hole is formed in the center of the elastic locking sealing block 10, when external force is not applied, the inner guide pipe can freely slide in the sealing insertion hole, the elastic locking sealing block 10 deforms when being extruded by external force, the inner guide pipe is locked and fixed, and the inner guide pipe and the outer guide pipe cannot slide relatively. In the process of locking the sealing locking cap and the connecting seat in a threaded fit manner, the sealing locking cap and the connecting seat extrude the elastic locking sealing block, the elastic locking sealing block deforms under the action of extrusion force, and the inner guide pipe is locked and fixed while the inner guide pipe is sealed with the inner pipe sliding hole and the inner pipe inserting hole.
In a further improvement of this embodiment, the inner conduit includes a sealing control section 11 and a replacement injection section, the sealing control section 11 is located at the rear side of the replacement injection section, the outer diameter of the sealing control section 11 is greater than that of the replacement injection section, the inner diameter of the sealing control section 11 is the same as that of the replacement injection section, and the sealing control section 11 is located in the connecting seat and at the rear side thereof; is convenient for operation and control and is not easy to deform due to stress. The rear end of the outer catheter is provided with an operation control tube, the outer diameter of the operation control tube is larger than that of the outer catheter, and the three-way joint is connected to the rear end of the operation control tube; the operation control tube is convenient to take and control in the using process, the improvement is further realized, the operation control tube can be provided with an operation handle or a holding part, and the operation control in the using process is more facilitated.
The fluid in the utility model refers to any substance that can flow in the catheter, such as blood, abscess or mixture of smaller human body tissue and liquid.
When the fluid leading-out type medicine target replacement catheter for the lesion part provided by the embodiment is used, the size of the lesion part is determined through detection of a patient, the sealing locking cap is rotated reversely, the sealing locking cap is separated from the connecting seat, the front and rear positions of the elastic locking sealing block on the inner catheter are adjusted, and then the size of the front end of the inner catheter extending out of the front end of the outer catheter is adjusted to be matched with the size of the lesion part; and then, the sealing locking cap is matched and locked with the connecting seat through threads, in the process, the sealing locking cap and the connecting seat extrude the elastic locking sealing block, the elastic locking sealing block deforms under the action of extrusion force, and the inner guide pipe is locked and fixed and meanwhile the space between the inner guide pipe and the inner pipe sliding hole as well as between the inner guide pipe and the inner pipe inserting hole is sealed. Then the front ends of the outer catheter and the inner catheter are placed in a pathological change part through an operation channel, the front end of the outer catheter is positioned at the back part of the pathological change part, and the front end of the inner catheter is positioned at the middle part or the front part of the pathological change part; the injector is connected with the rear end of the inner catheter, the liquid extractor (the injector or the negative pressure drainage device) is connected with the rear end of the outer catheter through the three-way joint, and when the fluid at the pathological change position is extracted, the medicine for treating the pathological change is injected into the pathological change position, so that the medicine is exchanged with the fluid at the pathological change position of the body of a patient. The utility model has simple structure and convenient operation, can discharge the stagnated blood in the vein at the varicose position of the body of the varicose vein patient out of the body and inject the medicine simultaneously, the medicine is fully contacted with the vessel wall, the occurrence probability of thrombus in the vessel cavity and thrombophlebitis is greatly reduced, and the treatment effect is good; when used for treating cyst diseases such as hepatic cyst, renal cyst and the like, the medicine can be injected while drawing liquid from cyst pathological changes, and the medicine is used for replacing fluid substances at the cyst pathological changes, so that the medicine has strong targeting property and good treatment effect.
Claims (8)
1. A lesion fluid leading-out type medicine targeted replacement catheter is characterized by comprising an outer catheter and an inner catheter, wherein the front end of the outer catheter is open, the outer diameter of the inner catheter is smaller than the inner diameter of the outer catheter, the inner catheter is inserted into the outer catheter, the front end of the inner catheter extends out of the front end of the outer catheter, a three-way joint is arranged at the rear end of the outer catheter, and the rear end of the inner catheter is led out in a sealing mode through the rear end of the three-way joint.
2. The lesion fluid leading-out type medicine targeted replacement catheter as claimed in claim 1, wherein the outer diameter of the inner catheter is 0.3-0.8 times of the inner diameter of the outer catheter, and the front end of the inner catheter extends out of the front end of the outer catheter by 2-100mm.
3. The lesion fluid leading-out type drug targeted replacement catheter as claimed in claim 1 or 2, wherein the first end of the three-way joint is connected with the rear end of the outer catheter, the rear end of the inner catheter is hermetically led out from the second end of the three-way joint, the third end of the three-way joint is provided with a joint valve, and the rear end of the inner catheter is provided with a joint valve.
4. The fluid leading-out type drug targeting replacement catheter for the diseased region according to claim 1, wherein the rear end of the three-way joint is provided with a connecting base, the rear side of the connecting base is provided with a sealing locking cap which is in threaded fit with the connecting base, the rear side of the sealing locking cap is provided with an excessive connection pipe, the connecting base is provided with an inner pipe sliding hole, the sealing locking cap is provided with an inner pipe insertion hole, the inner catheter passes through the inner pipe sliding hole and the inner pipe insertion hole and enters the excessive connection pipe, the inner catheter can freely slide in the inner pipe sliding hole and the inner pipe insertion hole, and the inner catheter between the rear side of the connecting base and the sealing locking cap is provided with an elastic locking sealing block.
5. The lesion fluid-drawing type drug targeted replacement catheter as claimed in claim 4, wherein the first end of the three-way joint is connected to the rear end of the outer catheter, the rear end of the inner catheter is hermetically drawn out from the second end of the three-way joint, the third end of the three-way joint is provided with a joint valve, and the rear end of the transition connection tube is provided with a joint valve.
6. The lesion fluid leading-out type drug targeted replacement catheter according to claim 4 or 5, wherein the elastic locking sealing block is made of rubber or silica gel material, the elastic locking sealing block is in a circular truncated cone shape, a sealing insertion hole is formed in the center of the elastic locking sealing block, the inner catheter can freely slide in the sealing insertion hole when no external force is applied, the elastic locking sealing block deforms when being squeezed by the external force to lock and fix the inner catheter, and the inner catheter and the outer catheter cannot slide relatively.
7. The lesion fluid leading-out type drug targeting replacement catheter as claimed in claim 6, wherein the inner catheter comprises a sealing control section and a replacement injection section, the sealing control section is located at the rear side of the replacement injection section, the outer diameter of the sealing control section is larger than that of the replacement injection section, and the sealing control section of the inner catheter is located in the connection seat and at the rear side thereof.
8. The lesion fluid leading-out type drug targeted replacement catheter as claimed in claim 6, wherein an operation control tube is arranged at the rear end of the outer catheter, the outer diameter of the operation control tube is larger than that of the outer catheter, and the three-way joint is connected to the rear end of the operation control tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220283982.XU CN217854124U (en) | 2022-02-12 | 2022-02-12 | Lesion fluid leading-out type medicine targeting replacement catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220283982.XU CN217854124U (en) | 2022-02-12 | 2022-02-12 | Lesion fluid leading-out type medicine targeting replacement catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217854124U true CN217854124U (en) | 2022-11-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220283982.XU Active CN217854124U (en) | 2022-02-12 | 2022-02-12 | Lesion fluid leading-out type medicine targeting replacement catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217854124U (en) |
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2022
- 2022-02-12 CN CN202220283982.XU patent/CN217854124U/en active Active
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