CN113143412B - Venous valve resection instrument - Google Patents
Venous valve resection instrument Download PDFInfo
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- CN113143412B CN113143412B CN202110716083.4A CN202110716083A CN113143412B CN 113143412 B CN113143412 B CN 113143412B CN 202110716083 A CN202110716083 A CN 202110716083A CN 113143412 B CN113143412 B CN 113143412B
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- blood vessel
- butt joint
- guide wire
- ball
- ball top
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
Abstract
A venous valvectomy device comprising a vascular support tube; a cut-out structure and a butt-joint structure; the blood vessel supporting structure is a structure arranged at the initial end of the blood vessel; the front end of the cutting structure is a spherical top structure I, the rear end of the cutting structure comprises a spherical top-shaped recess, and a circular cutter is formed at the tail end of the spherical top recess; the front end of the butt joint structure comprises a ball top protruding structure I matched with the ball top recess; a second ball top protruding structure for ensuring smooth exit is arranged at the rear end of the butt joint structure; a setting channel of a traction guide wire is arranged between the resection structure and the butt joint structure in the longitudinal direction, wherein the setting channel of the resection structure is bonded with the traction guide wire together, and the traction guide wire does not penetrate through the setting channel on the resection structure; the traction guide wire passes through the arrangement channel of the butt joint structure; and the butt joint structure generates relative sliding motion on the traction guide wire; and a forward push pipe arranged outside the forward push guide wire and used for pushing the butt joint structure to move along the traction guide wire is additionally arranged. The instrument can effectively cut and take out the valve, and has reasonable structure and simple use.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a venous valve resection instrument.
Background
The orthotopic saphenous vein bypass transplantation is an operation mode for treating lower limb ischemia, and is characterized in that saphenous vein blood vessels are obtained and then transplanted to artery blood vessels at the original positions to be matched with the artery blood vessels; the 5-year patency rate of the orthotopic great saphenous vein bypass transplantation reported in the literature is similar to the 5-year patency rate of the eversion great saphenous vein bypass transplantation, the anastomotic aperture of the orthotopic great saphenous vein bypass transplantation and the corresponding artery is matched higher, the orthotopic great saphenous vein bypass transplantation can be anastomosed to the anterior tibial part, the posterior tibial part and even the dorsal foot artery and the like, and the vascular bed can not be damaged by the operation mode.
However, because arterial blood has no valve, the great saphenous vein which is not overturned needs to be anastomosed after venous valves in the great saphenous vein are excised, while a venous valvulotome is generally used for valve excision, and the conventional valvulotome generally enters a blood vessel along the valve direction and then damages the valves when the valvulotome at the rear end is withdrawn to achieve the effect of ensuring smooth blood flow, and the prior technical scheme is CN 90207022-in-situ venous valve excider; CN 201220694589-a venous valve resectoscope; the prior technical scheme is realized by a mode of withdrawing a valvulotome to destroy a venous valve; in the process, the excision amount of the venous valve cannot be ensured, the requirement on withdrawal speed is high, and the problem of damaging the venous vessel is easy to occur; in addition, the conventional great saphenous vein is in a compressed state in a free state, if the large saphenous vein cannot be opened in advance, the whole valvectomy instrument is difficult to enter, and the vein is damaged due to ineffective guidance during retraction, so that special care needs to be taken by a doctor during operation.
In addition, at present, the vein lumen is in a non-perfusion 'collapse' state after the great saphenous vein is dissociated, and the insertion and propulsion difficulties are often caused when the vein valvulotome is inserted in an antegrade manner, especially under the condition that the caliber of the great saphenous vein is relatively small; the large saphenous vein which is not damaged by the valve is lack of liquid lubrication in the lumen, so that the valvulotome is adhered to the vein wall, the valvulotome is difficult to withdraw, and the valvulotome can be clamped and hung on the vein wall in serious conditions, so that the vein wall is damaged and torn, and the vein bridge vascular transplantation fails.
There is therefore a need for a valve resection instrument that can effectively and accurately resect a venous valve and carry the resected valve out. The invention aims at the problem and provides a venous valve resection instrument. The invention aims at the problems and provides a venous valve resection instrument.
Disclosure of Invention
To overcome the problems set forth in the background, the present invention provides a venous valve removal apparatus.
A venous valvectomy device comprising a vascular support tube; a cut-out structure and a butt-joint structure; the blood vessel supporting structure is a structure arranged at the initial end of the blood vessel; the front end of the cutting structure is a ball top structure I, the rear end of the cutting structure comprises a ball top recess, and a circular cutter is formed at the tail end of the ball top recess; the front end of the butt joint structure comprises a ball top protruding structure I matched with the ball top recess; a second ball top protruding structure for ensuring smooth exit is arranged at the rear end of the butt joint structure; a setting channel of a traction guide wire is arranged between the resection structure and the butt joint structure in the longitudinal direction, wherein the setting channel of the resection structure is bonded with the traction guide wire together, and the traction guide wire does not penetrate through the setting channel on the resection structure; the traction guide wire passes through the arrangement channel of the butt joint structure; and the butt joint structure generates relative sliding motion on the traction guide wire; and a forward pushing structure for pushing the butt joint structure to move along the traction guide wire is additionally arranged. When the blood vessel graft is used, firstly, a blood vessel supporting tube is arranged at the initial end of a vein blood vessel to prop open the blood vessel, then, a resection structure enters the interior of the blood vessel through the blood vessel supporting tube, the resistance can be increased when the blood vessel graft passes through a valve, the anterior movement is stopped after the resistance is reduced again after the resistance is sensed to be increased, the resection structure is slightly withdrawn, the resection structure is kept still when the resection structure cannot be withdrawn, the butt joint structure is pushed into a ball top recess of the resection structure through the forward pushing structure, the butt joint structure is pushed forward with strength, the effective cutting of the valve by a circular cutter is completed, and the last step of resection of a second valve structure is repeated until the other end of the graft blood vessel is finally reached; the structures are then uniformly withdrawn, at which time all valves in the implanted venous vessel are removed. The valve can be completely and effectively removed through the correspondingly used removing structure and the butt joint structure, and the size of the removed valve is determined; by arranging the blood vessel supporting tube, the blood vessel can be effectively expanded at the initial end, and then the entering operation of other structures is carried out; the whole structure is reasonable in design and simple to use.
Furthermore, a guiding and entering structure which is provided with a second ball top structure and is tightly attached to the blood vessel supporting tube is arranged in the blood vessel supporting tube; the length of the guide entering structure is larger than that of the blood vessel supporting structure, and the guide entering structure can exit from the blood vessel supporting tube; when in use, the two are combined, the blood vessel supporting tube is sent to the initial section of the blood vessel under the guidance of the guide entering structure, and the guide entering structure is withdrawn; the arrangement facilitates the rapid placement of the vascular supporting tube into the blood vessel, thereby facilitating the subsequent operation.
Furthermore, a heparin injection channel penetrating through the guide entry structure is arranged in the guide entry structure, and the guide entry structure can be lubricated by injecting heparin through the heparin injection channel.
Furthermore, the rear end of the heparin injection channel is connected with an extension tube, the extension tube is provided with a connector of an injector or an injection pump, or the rear end of the leading entry structure is provided with a connector of an injector or an injection pump communicated with the heparin injection channel; the heparin is guided and guided into the front end of the two ball top structures of the structure and flows to infiltrate the whole guiding and entering structure and the blood vessel supporting tube by being connected with an injector or an injection pump with heparin.
Furthermore, the first dome structure and the second dome structure are round domes or oval domes, and the arrangement can effectively ensure that the blood vessels are protected during entering and reduce entering resistance.
Further, the top of the ball is a round top of the ball or an oval top of the ball.
Furthermore, the first ball top protruding structure and the second ball top protruding structure are also arranged to be round ball tops or oval ball tops; and the shape of the first ball top protruding structure is different from that of the second ball top protruding structure, so that the first ball top protruding structure can be effectively matched with the second ball top recessed structure.
Furthermore, the external shape of the spherical top structure at the position of the resection structure is a cylindrical structure, and the diameter of the spherical top structure is smaller than that of the blood vessel. This arrangement ensures protection of the vessel wall during the venous valve removal procedure.
Furthermore, the butt joint structure is only provided with a ball top protruding structure I and a ball top protruding structure II which are connected with each other; or the spherical top protruding structure I and the spherical top protruding structure II are arranged on the cylindrical section; and the diameter of the cylindrical section is smaller than the diameter of the blood vessel.
Further, the diameter of the circular cutter is equal to the diameter of the cylindrical structure of the cutting structure, so that sufficient cutting of the blood vessel valve can be ensured.
Furthermore, the traction guide wire is a traction guide wire tube, and a pipeline of the traction guide wire tube is a heparin injection micro-pipeline; and the heparin injection micro-pipeline is opened at the foremost end of the spherical top structure, and flows out of the infiltration excision structure and the butt joint structure through the spherical top structure.
Furthermore, the rear end of the traction guide wire tube is connected with an injection pump which automatically pumps the heparin into the injection pump.
Furthermore, the forward pushing structure is a forward pushing pipe, the diameter of the forward pushing pipe is smaller than that of the butt joint structure, and the forward pushing structure can conveniently enter the blood vessel and move smoothly in the blood vessel.
Furthermore, a longitudinal notch which completely penetrates through the front push pipe is arranged on the front push pipe, and the width of the longitudinal notch is not less than the diameter of the wire guide pipe. The arrangement can ensure that the yarn guide pipe enters the front push pipe through the longitudinal gap, and the front push pipe can be sleeved outside the yarn guide pipe to operate under the condition that the yarn guide pipe is bent.
Furthermore, the length of the forward pushing pipe is longer than that of the transplanted vein, and the arrangement can effectively realize the pulling and pushing of the butt-jointed excised valve.
Furthermore, the material of excision structure is medical rigid plastic or medical ceramic material, and the sharpness of circular cutter can be guaranteed in this kind of setting, guarantees the validity to the valve butt joint excision.
Furthermore, the butt joint structure can be made of plastic or rubber materials with toughness, and the arrangement can effectively avoid damage to the circular cutter structure in the cutting process.
The invention has the beneficial effects that: through excision structure, butt joint structure, preceding structure, the cooperation that the blood vessel struts the pipe is used, can be quick carry out the excision of venous valve, and guarantee the size of excision valve and guide away the excision valve from venous vessel.
Drawings
FIG. 1 is a schematic view of the configuration of the avascular support tube and syringe pump of the present invention;
FIG. 2 is a schematic view of the whole structure of the present invention with a blood vessel support tube and an injection pump and inside the blood vessel;
FIG. 3 is a longitudinal sectional view of the intravascular stent of the present invention at the site of application;
FIG. 4 is a longitudinal sectional structural view of the intravascular acting site of the intravascular stent of the present invention;
FIG. 5 is a schematic view of a cutting structure and a guide wire attachment structure in accordance with the present invention;
FIG. 6 is a perspective view of the docking structure of the present invention;
FIG. 7 is a schematic view of the structure of the vascular support structure with the access guide structure and heparin injection channel of the present invention;
FIG. 8 is a schematic view of a push tube of the present invention;
in the figure, 1, the structure is cut away; 11. a ball top structure I; 12. the top of the ball is sunken; 13. a circular cutter; 2. a butt joint structure; 21. a ball top protruding structure I; 22. a second ball top protruding structure; 23. a cylindrical section; 3. a vascular stent; 31. a lead-in structure; 311. a second dome structure; 32. a heparin injection channel; 33. a connector; 4. Drawing the guide wire tube; 41. arranging a channel; 42. heparin is injected into the micro-pipeline; 5. a forward push tube; 51. a longitudinal notch; 6. a syringe pump.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
A venous valvectomy device comprising a vascular support tube 3; a cutting structure 1 and a butt joint structure 2; the blood vessel supporting structure is a structure arranged at the initial end of the blood vessel; the front end of the cutting structure 1 is a ball top structure I11, the rear end of the cutting structure comprises a ball top recess, and a circular cutter 13 is formed at the tail end of the ball top recess 12; the front end of the butt joint structure 2 comprises a ball top protruding structure I21 matched with the ball top recess 12; the rear end of the butt joint structure 2 is provided with a second ball top protruding structure 22 which ensures smooth exit; in addition, a setting channel 41 of a traction guide wire is arranged between the resection structure 1 and the butt joint structure 2 in the longitudinal direction, wherein the setting channel 41 of the resection structure 1 is bonded with the traction guide wire together, and the traction guide wire does not penetrate through the setting channel 41 on the resection structure 1; drawing the guide wire through the setting channel 41 of the docking structure 2; and the butt joint structure 2 generates relative sliding motion on the traction guide wire; a forward pushing structure for pushing the butt joint structure 2 to move along the traction guide wire is additionally arranged; as shown in fig. 1-2.
When the cutting device is used, firstly, the blood vessel supporting tube 3 is arranged at the initial end of a vein to prop open the blood vessel, then the cutting structure 1 enters the blood vessel through the blood vessel supporting tube 3, the resistance can be increased when the cutting device passes through a valve, the cutting device stops advancing after the resistance is reduced again after the resistance is sensed to be increased, the cutting structure is slightly withdrawn, the cutting structure 1 is kept still when the cutting structure cannot be withdrawn, the butt joint structure 2 is pushed into the ball top recess of the cutting structure 1 through the forward pushing structure, the butt joint structure 2 is pushed forward with strength to finish the effective cutting of the valve by the circular cutter 13, and then the previous step is repeated to cut a second valve structure until the other end of the transplanted blood vessel is finally reached; the structures are then uniformly withdrawn, at which time all valves in the implanted venous vessel are removed. The resection valve can be completely and effectively resected through the resection structure 1 and the butt joint structure 2 which are correspondingly used, and the size of the resection valve is determined; by arranging the blood vessel supporting tube 3, the blood vessel can be effectively expanded at the initial end, and then the entering operation of other structures is carried out; the whole structure is reasonable in design and simple to use.
The resection structure 1 is made of medical hard plastics or medical ceramic materials, and the sharpness of the circular cutter 13 can be guaranteed by the arrangement, so that the effectiveness of butt joint resection of the valve is guaranteed. The butt joint structure 2 can be made of plastic or rubber materials with toughness, and the arrangement can effectively avoid damage to the structure of the circular cutter 13 in the cutting process.
As shown in fig. 3-4, the first dome structure 11 and the second dome structure 311 are circular domes or elliptical domes, which can effectively ensure the protection of blood vessels and reduce the entry resistance. The top of the ball is a round top of the ball depression 12 or an oval top of the ball depression 12. The first ball top protruding structure 21 and the second ball top protruding structure 22 are also arranged to be round ball tops or oval ball tops; and the shape of the first ball top protruding structure 21 is different from that of the second ball top protruding structure 22, so that the first ball top protruding structure 21 can be effectively matched with the ball top sunken structure. The external shape of the spherical top structure at the excision structure 1 is a cylindrical structure, and the diameter of the spherical top structure is smaller than that of the blood vessel. The butt joint structure 2 is only provided with a first ball top protruding structure 21 and a second ball top protruding structure 22 which are connected with each other; the diameter of the circular cutter 13 is equal to the diameter of the cylindrical structure of the ablation structure 1, which ensures adequate ablation of the vascular valve.
As shown in fig. 4 and 8, the pushing structure is a pushing tube 5, and the diameter of the pushing tube 5 is smaller than that of the docking structure 2, so that the pushing structure can enter the blood vessel quickly and move smoothly in the blood vessel. The front push tube 5 is provided with a longitudinal notch 51 which completely penetrates through, and the width of the longitudinal notch 51 is not less than the diameter of the guide wire tube. Through the arrangement, the guide wire pipe can enter the front push pipe 5 through the longitudinal notch 51, and the front push pipe 5 can be sleeved on the outer side of the guide wire pipe to operate under the condition that the guide wire pipe is bent. The length of the forward push tube 5 is longer than that of the transplanted vein, and the arrangement can effectively realize the traction and push butt-joint resection valve.
Example 2
On the basis of embodiment 1, an introduction structure 31 for introducing the vascular support tube 3 is added; as shown in fig. 7, the following specific settings are set: a guiding and entering structure 31 which is provided with a second dome structure 311 and is tightly attached to the vascular support tube 3 is arranged in the vascular support tube 3; the guiding and entering structure 31 is longer than the vessel supporting structure, and the guiding and entering structure 31 can be withdrawn from the vessel supporting tube 3; when in use, the two are combined, the vascular support tube 3 is sent to the initial segment of the blood vessel under the guidance of the guide entering structure 31, and the guide entering structure 31 is withdrawn; the arrangement facilitates the rapid placement of the vascular support tube 3 into the blood vessel, thereby facilitating the subsequent operation.
Example 3
On the basis of the embodiment 2, the heparin injection channel 32 for reducing the entering resistance of the vascular supporting tube 3; as shown in fig. 7, the following specific settings are set: the introduction structure 31 is provided with a heparin injection passage 32 penetrating the introduction structure 31, and heparin is injected through the heparin injection passage 32 to lubricate the introduction structure 31. The back end of the heparin injection channel 32 is connected with an extension tube, the extension tube is provided with a connector 33 of the injector or the injection pump 6, or the back end of the guide entering structure 31 is provided with a connector 33 of the injector or the injection pump 6 communicated with the heparin injection channel 32; by connecting with a syringe or a syringe pump 6 with heparin, the heparin is guided and guided into the front end of the second dome structure 311 of the structure 31 and flows to infiltrate the whole guiding and entering structure 31 and the vascular supporting tube 3.
Example 4
On the basis of examples 1 to 3, the shape of the butt structure 2 was changed: as shown in fig. 6, the docking structure 2 further includes a cylindrical section 23 disposed between the first dome projection 21 and the second dome projection 22; and the diameter of the cylindrical section 23 is smaller than the vessel diameter.
Example 5
On the basis of the embodiments 1 to 4, the cutting-off reducing structure 1 is arranged, and the butt joint structure 2 enters the resistance structure, as shown in fig. 5 to 6, specifically, the traction guide wire is the traction guide wire tube 4, and the channel of the traction guide wire tube 4 is the heparin injection micro-channel 42; the heparin injection micro-pipeline 42 is opened at the foremost end of the ball top structure I11 and flows out of the infiltration excision structure 1 and the butt joint structure 2 through the ball top structure I11; the rear end of the traction guide wire tube 4 is connected with an injection pump 6 which automatically pumps heparin.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (8)
1. A venous valvectomy device comprising a vascular support tube; a cut-out structure and a butt-joint structure; it is characterized in that the blood vessel supporting tube is a structure arranged at the initial end of the blood vessel; the front end of the cutting structure is a ball top structure I, the rear end of the cutting structure comprises a ball top recess, and a circular cutter is formed at the tail end of the ball top recess; the front end of the butt joint structure comprises a ball top protruding structure I matched with the ball top recess; a second ball top protruding structure for ensuring smooth exit is arranged at the rear end of the butt joint structure; a setting channel of a traction guide wire is arranged between the resection structure and the butt joint structure in the longitudinal direction, wherein the setting channel of the resection structure is bonded with the traction guide wire together, and the traction guide wire does not penetrate through the setting channel on the resection structure; the traction guide wire passes through the arrangement channel of the butt joint structure; and the butt joint structure generates relative sliding motion on the traction guide wire; a forward pushing structure for pushing the butt joint structure to move along the traction guide wire is additionally arranged; the forward pushing structure is a forward pushing pipe, and the diameter of the forward pushing pipe is smaller than that of the butt joint structure; the front push tube is provided with a longitudinal notch which is completely penetrated, and the length of the front push tube is longer than that of the transplanted vein; a guiding and entering structure which is provided with a second ball top structure and is tightly attached to the blood vessel supporting tube is arranged in the blood vessel supporting tube; the length of the guide entering structure is larger than that of the blood vessel supporting tube, and the guide entering structure can exit from the blood vessel supporting tube; the material of the cutting structure is medical hard plastic or medical ceramic material; when in use, the vessel supporting tube is sent to the initial section of the vessel under the guidance of the guide entering structure, and the guide entering structure is withdrawn; the blood vessel supporting tube is arranged at the initial end of a vein blood vessel to open the blood vessel, then the excision structure enters the blood vessel through the blood vessel supporting tube, the resistance can be increased when the excision structure passes through the valve, the excision structure stops advancing after the resistance is reduced again after the resistance is sensed to be increased, the excision structure is withdrawn slightly, the excision structure is kept still when the excision structure cannot be withdrawn, the butt joint structure is pushed into the ball top recess of the excision structure through the forward pushing structure, the butt joint structure is pushed forward with strength, the effective cutting of the valve by the circular cutter is completed, and the last step of excision of the second valve structure is repeated until the other end of the transplanted blood vessel is finally reached; the structures are then uniformly withdrawn, at which time all valves in the implanted venous vessel are removed.
2. A venous valve removal instrument as claimed in claim 1, wherein a heparin injection channel is provided through the introducer access structure.
3. The venous valve removal device of claim 1, wherein the first dome structure and the second dome structure are circular domes or elliptical domes; the top of the ball is a round top of the ball or an oval top of the ball.
4. The venous valve removal device of claim 1, wherein the first dome projection structure and the second dome projection structure are also configured as a rounded dome or an elliptical dome; and the shape of the first ball top protruding structure is different from that of the second ball top protruding structure.
5. A venous valvectomy device according to claim 1, wherein the exterior of the dome structure at the site of the resection structure is cylindrical and has a diameter less than the diameter of the vessel.
6. A venous valvectomy device according to claim 1 wherein the docking structure is provided with only dome projection one and dome projection two interconnected; or the spherical top protruding structure I and the spherical top protruding structure II are arranged on the cylindrical section; and the diameter of the cylindrical section is smaller than the diameter of the blood vessel.
7. A venous valve removal device as claimed in claim 1, wherein the diameter of the circular cutter is equal to the diameter of the cylindrical structure of the removal structure.
8. The venous valve removal device of any of claims 1-7, wherein the pull guidewire is a pull guidewire tube, and the tubing of the pull guidewire tube is heparin injection microcatheter; and the heparin injection micro-pipeline is opened at the foremost end of the spherical top structure, and flows out of the infiltration excision structure and the butt joint structure through the spherical top structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716083.4A CN113143412B (en) | 2021-06-28 | 2021-06-28 | Venous valve resection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716083.4A CN113143412B (en) | 2021-06-28 | 2021-06-28 | Venous valve resection instrument |
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| Publication Number | Publication Date |
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| CN113143412A CN113143412A (en) | 2021-07-23 |
| CN113143412B true CN113143412B (en) | 2021-09-24 |
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| CN202110716083.4A Active CN113143412B (en) | 2021-06-28 | 2021-06-28 | Venous valve resection instrument |
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Citations (9)
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|---|---|---|---|---|
| US3837345A (en) * | 1973-08-31 | 1974-09-24 | A Matar | Venous valve snipper |
| US4493321A (en) * | 1982-05-25 | 1985-01-15 | Leather Robert P | Venous valve cutter for the incision of valve leaflets in situ |
| CN2067131U (en) * | 1990-03-09 | 1990-12-12 | 忻伟钧 | Instrument for excising veinous valve in situ |
| US5141491A (en) * | 1988-01-27 | 1992-08-25 | Medical Innovation Ab | Device for cutting venous valves |
| US5601580A (en) * | 1992-04-09 | 1997-02-11 | Uresil Corporation | Venous valve cutter |
| CN202932981U (en) * | 2012-12-17 | 2013-05-15 | 秦巍 | Venous valve exsector |
| CN206166997U (en) * | 2016-08-19 | 2017-05-17 | 上海交通大学医学院附属上海儿童医学中心 | Novel valve of pulmonary trunk membrane open shaper |
| CN109199540A (en) * | 2018-10-15 | 2019-01-15 | 中国医学科学院北京协和医院 | Venous valve hymenotome and its system |
| CN212630850U (en) * | 2020-09-09 | 2021-03-02 | 杭州诺生医疗科技有限公司 | Interventional punch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658301A (en) * | 1995-04-26 | 1997-08-19 | Vascutech, Inc. | Self-centering valvulotome |
| US5846241A (en) * | 1995-12-19 | 1998-12-08 | Johns Hopkins University | Bipolar electrocautery valvulotome |
-
2021
- 2021-06-28 CN CN202110716083.4A patent/CN113143412B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837345A (en) * | 1973-08-31 | 1974-09-24 | A Matar | Venous valve snipper |
| US4493321A (en) * | 1982-05-25 | 1985-01-15 | Leather Robert P | Venous valve cutter for the incision of valve leaflets in situ |
| US5141491A (en) * | 1988-01-27 | 1992-08-25 | Medical Innovation Ab | Device for cutting venous valves |
| CN2067131U (en) * | 1990-03-09 | 1990-12-12 | 忻伟钧 | Instrument for excising veinous valve in situ |
| US5601580A (en) * | 1992-04-09 | 1997-02-11 | Uresil Corporation | Venous valve cutter |
| CN202932981U (en) * | 2012-12-17 | 2013-05-15 | 秦巍 | Venous valve exsector |
| CN206166997U (en) * | 2016-08-19 | 2017-05-17 | 上海交通大学医学院附属上海儿童医学中心 | Novel valve of pulmonary trunk membrane open shaper |
| CN109199540A (en) * | 2018-10-15 | 2019-01-15 | 中国医学科学院北京协和医院 | Venous valve hymenotome and its system |
| CN212630850U (en) * | 2020-09-09 | 2021-03-02 | 杭州诺生医疗科技有限公司 | Interventional punch |
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| CN113143412A (en) | 2021-07-23 |
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