Needle instrument for vascular puncture and ligation in varicosity surgery

Abstract

The utility model provides a needling instrument for vascular puncture ligation in varicosity surgery, and belongs to the technical field of medical instruments. The needling instrument comprises an outer sleeve needle tube, a pushing rod, an anchor and a ligature, the pushing rod extends into the outer sleeve needle tube from the tail of the outer sleeve needle tube, the anchor is arranged in the end, close to the tip of the outer sleeve needle tube, of the outer sleeve needle tube, the middle of the ligature penetrates through the anchor or is fixed to the two ends of the anchor, and the two ends of the ligature extend out from the tail of the outer sleeve needle tube. A blood vessel can be percutaneously punctured through the tip of the outer sleeve needle tube, the pushing rod can push the anchors out to the side, away from the subcutaneous part, of the blood vessel, and the two anchors and the ligature are matched to complete blood vessel ligation. The needle can effectively carry out high ligation on the trunk of varicose veins, especially great saphenous veins, through a percutaneous puncture method, operation is simpler and more minimally invasive, the consumable structure is relatively simple, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a needle used for blood vessel puncture and ligation in varicose vein surgery. Background Art

[0002] Varicose veins of the lower limbs are a common clinical disease that often occurs in the great saphenous vein and can be caused by a variety of different diseases.

[0003] Current treatments for varicose veins include:

[0004] 1. Open surgical treatment

[0005] The main method is: high ligation + stripping of the great saphenous vein. Compared with the traditional surgical procedure, high ligation + stripping of the great saphenous vein fundamentally eliminates the reflux caused by the insufficiency of the great saphenous vein valve. It is also a relatively thorough surgical method. In principle, it is suitable for all patients with C2 grade and above superficial varicose veins of the lower limbs. The disadvantage of this operation is that there are many incisions and great trauma. This procedure can be divided into antegrade stripping, retrograde stripping, antegrade and retrograde combined stripping and outpatient surgery based on hemodynamics-CHIVA.

[0006] Retrograde stripping is to make an incision at the medial malleolus, find the great saphenous vein trunk, ligate the distal end, insert the stripper device and send it to the oval fossa at the root of the thigh, make an incision there, find its branches and ligate and cut them off, cut the great saphenous vein trunk 0.5 cm away from the saphenofemoral junction, ligate and suture the proximal end, tie the distal end to the stripper, and extract the great saphenous vein from top to bottom. Antegrade stripping, antegrade and retrograde combined stripping, and CHIVA are not described in detail.

[0007] 2. Intracavitary ablation therapy (minimally invasive, interventional therapy)

[0008] Thermal ablation therapy: Thermal ablation therapy mainly includes endovenous laser ablation (EVLA), radiofrequency ablation (RFA) and microwave ablation. Laser ablation (EVLA) is a method of converting laser into heat energy to directly destroy the venous intima, causing the collagen in the venous intima to shrink, and then fibrosis to occlude the varicose veins; endovenous RFA and microwave ablation generate heat energy through radiofrequency and microwaves, causing local tissue hyperthermia, leading to vascular endothelial damage and contraction of collagen fibers in the venous intima, and then closing the blood vessels through compression, and finally leading to fibrosis. The appropriate range is a trunk diameter of 4 to 15 mm. It should be noted that it mainly treats the proximal trunk, and the distal trunk and branches need to be treated separately. During treatment, the great saphenous vein trunk usually does not need to be high-ligated, but when the lumen diameter of the great saphenous vein root exceeds 15 mm or there is tumor-like expansion, or there is a large amount of thrombus, it is recommended to perform a point-type incision of the great saphenous vein high-position ligation + stripping.

[0009] Chemical ablation: Currently it mainly refers to sclerotherapy. Sclerotherapy for superficial varicose veins of the lower extremities is to inject sclerotherapy into the varicose vein cavity to destroy the venous lining, causing adhesions, leading to fibrosis closure, thereby eliminating or alleviating local venous hypertension. It is recommended for all types of varicose veins of the lower extremities. It can be used alone or as an adjuvant treatment during surgery. It is particularly suitable for treating residual varicose veins after surgery. Simple sclerotherapy is suitable for cases with a trunk diameter of less than 8mm. There is a risk of foam and thrombus entering the deep veins during the operation, and the risk of foam and thrombus entering the deep veins limits its application in cases with a trunk diameter greater than 8mm. The recurrence rate of simple sclerotherapy is higher than that of high saphenous vein ligation + stripping and thermal ablation.

[0010] In summary, high ligation and stripping of the great saphenous vein is the most effective treatment with the lowest recurrence rate. The disadvantage is that the surgery requires many incisions and is very traumatic. The starting point of thermal ablation treatment is generally 2 cm away from the opening of the great saphenous vein. There are many branches within this distance that cannot be processed, and the effect of high ligation cannot be achieved, which increases the recurrence rate. In addition, thermal ablation consumables such as laser and radiofrequency ablation are expensive. Sclerotherapy is the most economical and widely used treatment method, but simple sclerotherapy has a higher recurrence rate because it does not treat the great saphenous vein trunk and communicating branches at a high position.

[0011] Therefore, it is of great significance to seek a minimally invasive, effective (solving the problem of high-position treatment of the trunk), safe and economical treatment plan. Percutaneous high-position suture of the great saphenous vein trunk plus sclerotherapy can achieve this goal relatively effectively, but the percutaneous high-position suture operation is cumbersome and requires high surgical skills. In addition, if the fat tissue around the vein is not separated well during the operation, it will lead to poor suture effect and skin depression and deformation in the surgical area, affecting the appearance.

[0012] In view of the above reasons, the utility model provides a needle for puncturing and ligating blood vessels in varicose vein surgery to solve the above technical problems. Utility Model Content

[0013] The purpose of the utility model is to provide a needle for varicose vein surgery blood vessel puncture and ligation, which can effectively perform high-position ligation of varicose veins, especially the great saphenous vein trunk, through percutaneous puncture, with simpler and more minimally invasive operation, relatively simple consumable structure and low cost.

[0014] The utility model provides a needle instrument for puncturing and ligating blood vessels in varicose vein surgery, comprising: an outer sleeve needle tube, a pushing rod, an anchor and a ligature, wherein the pushing rod extends from the tail of the outer sleeve needle tube into the interior thereof, the anchor is arranged in one end of the outer sleeve needle tube close to the tip thereof, the middle part of the ligature passes through the anchor or is fixed to the surface of the anchor, the two ends of the ligature extend from the tail of the outer sleeve needle tube, the blood vessel can be percutaneously punctured through the tip of the outer sleeve needle tube, the pushing rod can push the anchor to the side of the blood vessel away from the subcutaneous part, and the cooperation of two groups of the anchor and the ligature can complete the ligature of the blood vessel.

[0015] Preferably, the pushing rod is a hollow rod, and the two ends of the ligature thread pass through the pushing rod and extend out from the tail of the outer sleeve needle tube.

[0016] Preferably, the pushing rod is a solid rod, and the two ends of the ligature thread extend along the gap between the pushing rod and the inner wall of the outer sleeve needle tube and extend out from the tail of the outer sleeve needle tube.

[0017] Preferably, an outer needle seat is provided at the tail of the outer sleeve needle tube.

[0018] Preferably, the rear portion of the push rod is provided with an inner needle seat adapted to be installed inside the outer needle seat, and a limiter is sleeved on one end of the push rod close to the inner needle seat.

[0019] Preferably, the outer shapes of the outer needle seat and the inner needle seat both include connected truncated cone segments and cylindrical segments, the outer needle seat is a hollow structure, and the inner needle seat is a hollow or solid structure.

[0020] Preferably, a positioner for limiting the puncture depth is sheathed on the exterior of the outer sleeve needle tube.

[0021] Preferably, the anchor is a cylindrical structure made of non-magnetic metal or medical plastic, and the ligature passes through the interior of the anchor.

[0022] Preferably, the anchor is a cylindrical structure made of non-magnetic metal or medical plastic, and the ligature is fixedly connected to the surface of the anchor by bonding.

[0023] Preferably, the outer needle seat can be installed in cooperation with the head of the syringe, and after the cooperation and installation, a fastener is arranged on the outer side of the outer needle seat for clamping.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. The needle is used for percutaneous puncture, which is the basic technology of interventional operation. Medical staff can master it skillfully, the operation is simple, and the damage is small;

[0026] 2. When the needle is used, two sets of needles are needed for one ligation. The outer needle tubes and push rods of the two sets of needles are assembled. After puncturing, two sets of anchors and ligatures are released under the blood vessels to complete the ligation. It can also be temporarily assembled when in use. One set of outer needle tubes and push rods are used to puncture and release two sets of anchors and ligatures in succession. It can effectively perform high-position ligation of the great saphenous vein, and it can also ligature other parts of the great saphenous vein. It can effectively replace high-position suture ligation and incision high-position ligation of the great saphenous vein;

[0027] 3. The skin has a single puncture hole, and the puncture channel and subcutaneous separation area are small, resulting in less damage, faster recovery, more beautiful appearance, and more in line with the concept of minimally invasive surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of the assembly state of the needles of Embodiment 1 and Embodiment 2 of the present utility model;

[0030] Figure 2 It is a schematic diagram of the structure of the outer sleeve needle tube in Example 1 and Example 2 of the utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the push rod in Example 1 of the utility model;

[0032] Figure 4 This is a schematic diagram of the coordination between the anchor and the ligature in Example 1 of the utility model;

[0033] Figure 5 This is a schematic diagram of the assembly of the needle of Example 1 of the utility model (without the limiter and the positioner);

[0034] Figure 6 This is a schematic diagram of the operation steps of puncture and ligation by the needles of Embodiment 1 and Embodiment 2 of the utility model;

[0035] Figure 7 This is a schematic diagram of the structure of the push rod in Example 2 of the utility model;

[0036] Figure 8 This is a schematic diagram of the coordination between the anchor and the ligature in Example 2 of the utility model;

[0037] Fig. 9 This is a schematic diagram of the assembly of the needle of Example 2 of the utility model (without the limiter and the positioner);

[0038] Description of reference numerals:

[0039] 1: outer needle tube; 11: outer needle seat; 2: push rod; 21: inner needle seat; 3: anchor; 4: ligature; 5: limiter; 6: locator. DETAILED DESCRIPTION

[0040] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] Example 1

[0044] like Figure 1-5As shown, the utility model provides a needle for puncturing and ligating blood vessels in varicose vein surgery, comprising: an outer sleeve needle tube 1, a push rod 2, an anchor 3 and a ligature 4, wherein the outer sleeve needle tube 1 is a hollow tube, the tip of which is a beveled needle blade, the push rod 2 extends into the inner part of the outer sleeve needle tube 1 from the tail of the outer sleeve needle tube 1, the anchor 3 is arranged in the inner part of the outer sleeve needle tube 1 near the tip, the middle part of the ligature 4 passes through the anchor 3 or is fixed to the two ends of the anchor 3, and the two ends of the ligature 4 are connected by the outer sleeve The tail of the needle tube 1 extends out, and the needle blade at the tip of the outer sleeve needle tube 1 can percutaneously puncture the high-position blood vessel of the great saphenous vein or other blood vessels. By pushing the push rod 2 by the tail, the anchor 3 can be pushed out from the tip of the outer sleeve needle tube 1 to the side of the blood vessel away from the subcutaneous layer. By puncturing with two sets of needles at the same time or successively or by disassembling and puncturing with one set of needles successively, the two sets of anchors 3 and the ligature 4 can be implanted under the blood vessel. The two sets of anchors 3 and the ligature 4 can cooperate to complete the ligation of the blood vessel.

[0045] In this embodiment, the push rod 2 is a hollow rod, and the two ends of the ligature 4 pass through the inside of the push rod 2 and extend from the tail of the outer sleeve needle tube 1. The outer surface of the outer sleeve needle tube 1 is provided with a scale in centimeters, which allows the operator to understand the puncture depth in real time. The tail of the outer sleeve needle tube 1 is provided with an outer needle seat 11, and the outer needle seat 11 is a hollow structure. The tail of the push rod 2 is provided with an inner needle seat 21 adapted to be installed inside the outer needle seat 11, and the inner needle seat 21 is a hollow structure. The outer shape of the outer needle seat 11 and the inner needle seat 21 both include a connected truncated cone section and a cylindrical section, wherein the thick end of the truncated cone section is coplanar and coaxially connected with the cylindrical section. In this embodiment, this set of needles does not need to be used with a syringe, and is mainly used for puncture and ligation. In other occasions, the outer sleeve needle tube 1 can also be used alone with a syringe for puncturing the skin and injecting liquid medicine. The outer needle seat 11 can be installed in conjunction with the head of the syringe. After the installation, a fastener is provided on the outside of the outer needle seat 11 to clamp.

[0046] In this embodiment, a stopper 5 is sleeved on one end of the push rod 2 near the inner needle seat 21, so that the anchor 3 will not be pushed out of the needle tube by mistake during the equipment state, puncture process and related use process. The stopper 5 is a hard plastic set in a cylindrical or square column shape, sleeved on the end of the truncated cone section of the inner needle seat 21 connected to the push rod 2, and one side of it is provided with an opening. When the outer needle tube 1 is punctured in place, the stopper 5 can be removed and pushed by the tail of the push rod 2, so that the anchor 3 is pushed out from the tip of the outer needle tube 1.

[0047] In this embodiment, a positioner 6 for limiting the puncture depth is mounted on the outside of the outer sleeve needle tube 1. The positioner 6 is a ring-shaped part that can cooperate with the scale on the tip of the outer sleeve needle tube 1 to limit the puncture depth when necessary.

[0048] In this embodiment, the anchor 3 is a hollow columnar structure, and the ligature 4 passes through the inside of the anchor 3. The anchor 3 is made of non-magnetic metal or medical plastic, and the ligature 4 can be a silk thread or a synthetic thread with higher strength. Both remain in the patient's body after ligation, and have good biocompatibility and will not cause rejection reaction in the body.

[0049] like Figure 6 As shown, the use of the needle of the utility model is as follows:

[0050] 1. Use two sets of prepared needles to puncture the pre-ligated blood vessels through the same skin puncture point, and penetrate the front and back walls of the blood vessels;

[0051] 2. Remove the stopper 5, push the push rod 2, and release the anchor 3 to the posterior wall of the blood vessel;

[0052] 3. After separating the superficial fascia in the puncture area, pull and tighten the ligature 4 to make the anterior and posterior walls of the blood vessels fit together and occlude;

[0053] 4. Tie a knot with the ligature to keep the blood vessel closed, cut off the excess thread, and the operation is completed.

[0054] Example 2

[0055] like Figure 1 As shown, the utility model provides a needle for puncturing and ligating blood vessels in varicose vein surgery, comprising: an outer sleeve needle tube 1, a push rod 2, an anchor 3 and a ligature 4, wherein the outer sleeve needle tube 1 is a hollow tube, the tip of which is a beveled needle blade, the push rod 2 extends into the inner part of the outer sleeve needle tube 1 from the tail of the outer sleeve needle tube 1, the anchor 3 is arranged in the inner part of the outer sleeve needle tube 1 near the tip of the outer sleeve needle tube 1, the middle part of the ligature 4 passes through the anchor 3 or is fixed to the surface of the anchor 3, and the two ends of the ligature 4 are connected by the outer sleeve The tail of the needle tube 1 extends out, and the needle blade at the tip of the outer sleeve needle tube 1 can percutaneously puncture the high-position blood vessel of the great saphenous vein or other blood vessels. By pushing the push rod 2 by the tail, the anchor 3 can be pushed out from the tip of the outer sleeve needle tube 1 to the side of the blood vessel away from the subcutaneous layer. By puncturing with two sets of needles at the same time or successively or by disassembling and puncturing with one set of needles successively, the two sets of anchors 3 and the ligature 4 can be implanted under the blood vessel. The two sets of anchors 3 and the ligature 4 can cooperate to complete the ligation of the blood vessel.

[0056] In this embodiment, if Figure 7 , 9As shown, the push rod 2 is a solid rod, and the two ends of the ligature 4 extend along the gap between the push rod 2 and the inner wall of the outer sleeve needle tube 1 and extend from the tail of the outer sleeve needle tube 1. The outer surface of the outer sleeve needle tube 1 is provided with a scale in centimeters, which allows the operator to understand the puncture depth in real time. The tail of the outer sleeve needle tube 1 is provided with an outer needle seat 11, and the outer needle seat 11 is a hollow structure. The tail of the push rod 2 is provided with an inner needle seat 21 adapted to be installed inside the outer needle seat 11, and the inner needle seat 21 is a solid structure. The outer shapes of the outer needle seat 11 and the inner needle seat 21 both include connected truncated cone sections and cylindrical sections, wherein the thick end of the truncated cone section is coplanar and coaxially connected to the cylindrical section. In this embodiment, this set of needles does not need to be used in conjunction with a syringe and is mainly used for puncture and ligation. In other occasions, the outer needle tube 1 can also be used alone in conjunction with a syringe to puncture the skin and inject liquid medicine. The outer needle seat 11 can be installed in conjunction with the head of the syringe. After the installation, a fastener is set on the outside of the outer needle seat 11 to clamp it.

[0057] In this embodiment, if Figure 1 As shown, a stopper 5 is sleeved on one end of the push rod 2 near the inner needle seat 21, so that the anchor 3 will not be pushed out of the needle tube by mistake during the equipment state, puncture process and related use process. The stopper 5 is a hard plastic set in a cylindrical or square column shape, sleeved on the end of the truncated cone section of the inner needle seat 21 connected to the push rod 2, and one side of it is provided with an opening. When the outer sleeve needle tube 1 is punctured in place, the stopper 5 can be removed and pushed by the tail of the push rod 2, so that the anchor 3 is pushed out from the tip of the outer sleeve needle tube 1.

[0058] In this embodiment, if Figure 1 As shown, the outer portion of the outer sleeve needle tube 1 is provided with a positioner 6 for limiting the puncture depth. The positioner 6 is an annular member that can cooperate with the scale at the tip of the outer sleeve needle tube 1 to limit the puncture depth when necessary.

[0059] In this embodiment, if Figure 8 , 9 As shown, the anchor 3 is a solid columnar structure, and the ligature 4 is joined by bonding and pressing. The anchor 3 is made of non-magnetic metal or medical plastic, etc. The ligature 4 can be a silk thread or a synthetic thread with higher strength. The ligature 4 is obviously longer than the outer needle tube 1, and the tail end extends out of the outer needle seat 11 in the assembled state to facilitate the ligation operation. The two remain in the patient's body after the ligation is completed, and they have good biocompatibility and will not cause rejection reactions in the body.

[0060] like Figure 6 As shown, the use of the needle of the utility model is as follows:

[0061] 1. Use two sets of prepared needles to puncture the pre-ligated blood vessels through the same skin puncture point, and penetrate the front and back walls of the blood vessels;

[0062] 2. Remove the stopper 5, push the push rod 2, and release the anchor 3 to the posterior wall of the blood vessel;

[0063] 3. After separating the superficial fascia in the puncture area, pull and tighten the ligature 4 to make the anterior and posterior walls of the blood vessels fit together and occlude;

[0064] 4. Tie a knot with the ligature to keep the blood vessel closed, cut off the excess thread, and the operation is completed.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A needle for puncture and ligation of blood vessels in varicose vein surgery, characterized in that: include: An outer sleeve needle tube, a push rod, an anchor and a ligature, wherein the push rod extends from the tail of the outer sleeve needle tube into the interior thereof, the anchor is arranged in one end of the outer sleeve needle tube close to its tip, the middle part of the ligature passes through the anchor or is fixed to the surface of the anchor, the two ends of the ligature extend from the tail of the outer sleeve needle tube, and the blood vessel can be percutaneously punctured through the tip of the outer sleeve needle tube, the push rod can push the anchor to the side of the blood vessel away from the subcutaneous part, and the two groups of the anchors and the ligature can cooperate to complete the ligation of the blood vessel.

2. The needle for puncture and ligation of varicose vein surgery according to claim 1, characterized in that: The pushing rod is a hollow rod, and the two ends of the ligature thread pass through the pushing rod and extend out from the tail of the outer sleeve needle tube.

3. The needle for puncture and ligation of varicose vein surgery according to claim 1, characterized in that: The pushing rod is a solid rod, and the two ends of the ligature thread extend along the gap between the pushing rod and the inner wall of the outer sleeve needle tube and extend out from the tail of the outer sleeve needle tube.

4. The needle for puncture and ligation of varicose vein surgery according to claim 1, characterized in that: The tail of the outer sleeve needle tube is provided with an outer needle seat.

5. The needle for puncture and ligation of varicose vein surgery according to claim 4, characterized in that: The tail of the push rod is provided with an inner needle seat adapted to be installed inside the outer needle seat, and one end of the push rod close to the inner needle seat is sleeved with a limiter.

6. The needle for puncture and ligation of varicose vein surgery according to claim 5, characterized in that: The outer shapes of the outer needle seat and the inner needle seat both include connected truncated cone sections and cylindrical sections. The outer needle seat is a hollow structure, and the inner needle seat is a hollow or solid structure.

7. The needle for puncture and ligation of varicose vein surgery according to claim 1, characterized in that: The outer portion of the outer sleeve needle tube is sheathed with a locator for limiting the puncture depth.

8. The needle for puncture and ligation of varicose vein surgery according to claim 1, characterized in that: The anchor is a cylindrical structure made of non-magnetic metal or medical plastic, and the ligature passes through the interior of the anchor.

9. The needle for puncture and ligation of varicose vein surgery according to claim 1, characterized in that: The anchor is a cylindrical structure made of non-magnetic metal or medical plastic, and the ligature is fixedly connected to the surface of the anchor by bonding.

10. The needle for puncture and ligation of varicose vein surgery according to claim 4, characterized in that: The outer needle seat can be installed in cooperation with the head of the syringe, and after the cooperation and installation, a fastener is arranged on the outer side of the outer needle seat for clamping.

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