CN114569867A - 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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- CN114569867A CN114569867A CN202210130968.0A CN202210130968A CN114569867A CN 114569867 A CN114569867 A CN 114569867A CN 202210130968 A CN202210130968 A CN 202210130968A CN 114569867 A CN114569867 A CN 114569867A
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- catheter
- rear end
- sealing
- inner catheter
- way joint
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/105—Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Biophysics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a lesion 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 by three way connection's rear end and is drawn forth. The invention has simple structure and convenient operation, can discharge the blood stasis in the blood vessel at the varicose vein of the varicose vein patient body out of the body, and simultaneously inject the medicine, the medicine is fully contacted with the blood vessel wall, thereby greatly reducing the occurrence probability of thrombus and thrombophlebitis in the blood vessel cavity and having good treatment effect; 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.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a lesion fluid leading-out type medicine targeted replacement catheter which is simple in structure, convenient to use, capable of replacing fluid tissues at lesions with medicines, capable of improving the effect of the medicines, good in treatment effect and capable of reducing the occurrence probability of thrombus.
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-varicose vein of fundus esophagus, varicocele, hemorrhoid and pelvic venous stasis syndrome, etc. The existing varicose vein treatment is mainly open surgery treatment; the thermal ablation technology mainly comprises laser, microwave and radio frequency, the thermal ablation mode achieves the purpose of closing blood vessels by damaging the blood vessels, the thermal ablation mode has complex operation for treating varicose veins and easily damages normal tissues, the thermal ablation achieves the purpose of closing the blood vessels by damaging the blood vessels, stagnant blood in diseased blood vessels cannot be removed in time, the stagnant blood at the varicose veins easily forms 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 treatment medicine into the cyst after the liquid is extracted is good, but the success rate is low when the operation is responsible for professional physicians with high technology; the direct injection of the medicine to the cyst lesion has poor medicine targeting property, long treatment period and poor effect.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the fluid leading-out type medicine target replacement catheter for the diseased part, which has a simple structure and convenient operation, can discharge extravasated blood in the blood vessel at the varicose position out of the body, simultaneously inject medicine, and ensure that the medicine is fully contacted with the blood vessel wall, thereby greatly reducing the occurrence probability of thrombus and thrombophlebitis in the blood vessel cavity and having good treatment effect.
The invention also aims to provide the fluid leading-out type medicine targeting replacement catheter for the lesion part, which can perform liquid drawing and medicine injection on the cyst lesion part simultaneously, replace fluid substances at the cyst lesion part with medicines, and has the advantages of strong medicine targeting property, good treatment effect, simple structure and convenience in operation.
The technical scheme adopted by the invention for solving the defects of the prior art is as follows:
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 outer diameter of the inner catheter is 0.5-15mm, the inner diameter of the outer catheter is 1-30mm, the outer diameter of the inner catheter is 0.3-0.8 time, preferably 0.5-0.6 time 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, preferably 5-30 mm.
The first end of the three-way joint is connected with the rear end of the outer guide pipe, the rear end of the inner guide pipe 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 guide pipe is provided with a joint valve.
The joint valve is a medical three-way joint valve.
The rear end of the three-way connector is provided with a connecting seat, the rear side of the connecting seat is provided with a sealing locking cap in threaded fit with the connecting seat, the rear side of the sealing locking cap is provided with a transition connecting pipe, the connecting seat is provided with an inner pipe sliding hole, the sealing locking cap is provided with an inner pipe inserting hole (communicated with the transition connecting pipe), an inner guide pipe passes through the inner pipe sliding hole and the inner pipe inserting hole and enters the transition connecting pipe, the inner guide pipe can freely slide in the inner pipe sliding hole and the inner pipe inserting hole, and an elastic locking sealing block is arranged on the inner guide pipe between the rear side surface of the connecting seat and the sealing locking cap. 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.
The first end of the three-way joint is connected with the rear end of the outer guide pipe, the rear end of the inner guide pipe 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 transition connecting pipe is provided with a joint valve. The inner conduit of the present invention is located in the transition connection pipe with a size of 5-30 mm.
The elastic locking sealing block is made of rubber or silica gel materials, the elastic locking sealing block is in a round table shape, a sealing insertion hole is formed in the center of the elastic locking sealing block, the inner guide pipe can freely slide in the sealing insertion hole when external force is not applied, the elastic locking sealing block deforms when being extruded by the external force, the inner guide pipe is locked and fixed, and the inner guide pipe and the outer guide pipe cannot slide relatively.
The inner guide pipe comprises a sealing control section and a replacement injection section, wherein the sealing control section is positioned at the rear side of the replacement injection section, the outer diameter of the sealing control section is larger than the outer diameter of the replacement injection section (the inner diameter of the sealing control section is the same as the inner diameter of the replacement injection section), and the sealing control section of the inner guide pipe is positioned in the connecting seat and at the rear side of the connecting seat. 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.
When the invention is used, the front ends of the outer catheter and the inner catheter are placed into a diseased part through the operation channel, at the moment, the front end of the outer catheter is positioned at the back part of the diseased part, and the front end of the inner catheter is positioned at the middle part or the front part of the diseased 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, and the medicine is exchanged with the fluid at the pathological change position of the body of a patient. The invention has simple structure and convenient operation, can discharge the blood stasis in the blood vessel at the varicose vein of the varicose vein patient body out of the body, and simultaneously inject the medicine, the medicine is fully contacted with the blood vessel wall, thereby greatly reducing the occurrence probability of thrombus and thrombophlebitis in the blood vessel cavity and having good treatment effect; 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 view of the present invention.
Fig. 2 is a schematic structural view of the outer catheter and the fixed connection part thereof after the outer catheter and the inner catheter are separated according to the present invention.
Fig. 3 is a schematic structural view of the inner catheter and the fixed connection part thereof after the outer catheter and the inner catheter are separated according to the present invention.
Fig. 4 is an enlarged partial sectional view of the connecting socket and the sealing cap of the present invention, and is also a partial structural 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 5.5 mm; the inner conduit 1 is inserted into 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 5-20 mm. 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 sealing 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 in the using process is more facilitated. 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 joint 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 connecting seat 5 is arranged at the second end of the three-way joint 4, a sealing locking cap 6 which is 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 at 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 inside of 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 5-30 mm; the inner conduit can slide freely 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 surface 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, the inner guide pipe can freely slide in the sealing insertion hole when external force is not applied, 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 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.
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 conduit is provided with an operation control tube, the outer diameter of the operation control tube is larger than that of the outer conduit, 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 invention refers to all substances which can flow in the catheter, such as blood, abscess or mixture of smaller human tissues and liquid.
When the fluid leading-out type medicine target replacement catheter for the lesion part is used, the size of the affected 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 back 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 affected part; 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 inner guide pipe, the inner pipe sliding hole and the inner pipe inserting hole are sealed. Then the front ends of the outer catheter and the inner catheter are placed into the pathological change part through the 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, and the medicine is exchanged with the fluid at the pathological change position of the body of a patient. The invention has simple structure and convenient operation, can discharge the blood stasis in the blood vessel at the varicose vein of the varicose vein patient body out of the body, and simultaneously inject the medicine, the medicine is fully contacted with the blood vessel wall, thereby greatly reducing the occurrence probability of thrombus and thrombophlebitis in the blood vessel cavity and having good treatment effect; 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.
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 eduction type drug targeting replacement catheter as claimed in claim 1, wherein the outer diameter of the inner catheter is 0.3-0.8 times 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 2-100 mm.
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 extraction type drug targeting replacement catheter as recited in claim 6, wherein an operation control tube is provided 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 |
|---|---|---|---|
| CN202210130968.0A CN114569867A (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 |
|---|---|---|---|
| CN202210130968.0A CN114569867A (en) | 2022-02-12 | 2022-02-12 | Lesion fluid leading-out type medicine targeting replacement catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114569867A true CN114569867A (en) | 2022-06-03 |
Family
ID=81773501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210130968.0A Pending CN114569867A (en) | 2022-02-12 | 2022-02-12 | Lesion fluid leading-out type medicine targeting replacement catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114569867A (en) |
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2022
- 2022-02-12 CN CN202210130968.0A patent/CN114569867A/en active Pending
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