Puncture kit

Abstract

The embodiment of the utility model provides a puncture suite, which relates to the field of puncture equipment and comprises a sleeve needle, a solid needle core, a hollow biopsy needle, a pusher and an iodine-containing gelatin sponge rod. The sleeve needle is provided with a positioning channel, and the solid needle core and the hollow biopsy needle can be selectively inserted into the positioning channel; the iodine-containing gelatin sponge rod is used for being inserted into the positioning channel after the solid needle core and the hollow biopsy needle are separated from the sleeve needle; and the pusher is matched with the positioning channel in a sliding manner and is used for pushing the iodine-containing gelatin sponge rod into the puncture channel from the positioning channel. The puncture suite is good in hemostatic effect, high in puncture success rate and high in puncture safety.

Description

Technical Field

[0001] The utility model relates to the field of puncture equipment, in particular to a puncture kit. Background Art

[0002] During clinical treatment, the most common complications of percutaneous liver puncture biopsy are bleeding and pain, with an incidence rate of up to 30%. Injecting autologous or allogeneic occlusion materials such as hydrogel, fibrin glue, autologous blood clots, and self-expanding sealants into the puncture needle tract can help reduce bleeding, but the effect is unsatisfactory. The puncture biopsy is performed using a cored biopsy needle. The cored puncture needle is divided into two parts: the puncture needle core and the cannula needle. After the puncture biopsy, the cannula needle is removed. The puncture tract is prone to bleeding. In severe cases, hemorrhagic shock may occur, which is life-threatening. Embolic agents are often used clinically to stop bleeding. The embolic agents currently available on the market include:

[0003] ① Gelatin sponge particle embolic agents, used for vascular embolization, have high fluidity and are difficult to control, but they cannot stagnate in the puncture tract. Furthermore, gelatin sponge particles may flow back into the heart and lungs through the blood vessels in the puncture tract, causing pulmonary embolism. Furthermore, there is no iodine contrast agent to visualize the particles during placement, which increases safety risks.

[0004] ② Gel sponge strips: After being trimmed to the appropriate size, doctors manually curl them into rod-like gelatin sponges for use in hemostasis. However, this manual process makes it difficult to produce the finished product in the required size and shape, and it takes a long time. The gelatin sponge also becomes loose when pushed, making it difficult to push it into the puncture tract, resulting in poor results.

[0005] ③ Coil embolization is used to stop bleeding, but coils are foreign matter and cannot be absorbed by the body, and are expensive.

[0006] ④ Tissue glue embolization is used to stop bleeding, but its fluidity may flow into blood vessels and cause ectopic embolism;

[0007] ⑤ The mixture of sponge particles-human prothrombin complex-iohexol is complicated to operate and needs to be prepared in advance.

[0008] Therefore, the existing puncture hemostasis method cannot achieve both good hemostasis effect and low cost. Utility Model Content

[0009] The purpose of the utility model includes providing a puncture kit, which can reduce the difficulty of hemostasis operation, improve puncture efficiency and hemostasis effect, relieve the patient's pain, and improve puncture safety.

[0010] The embodiment of the present utility model can be implemented as follows:

[0011] In a first aspect, the present invention provides a puncture kit comprising:

[0012] A sleeve needle, a solid needle core, a hollow biopsy needle, a pusher and an iodine-containing gelatin sponge stick. The sleeve needle is provided with a positioning channel, and the solid needle core and the hollow biopsy needle can be selectively inserted into the positioning channel; the iodine-containing gelatin sponge stick is used to be inserted into the positioning channel after the solid needle core and the hollow biopsy needle are separated from the sleeve needle; the pusher is slidably matched with the positioning channel to push the iodine-containing gelatin sponge stick from the positioning channel to the puncture channel.

[0013] In an optional embodiment, the sleeve needle includes a holding cylinder, a conical cylinder and a hollow needle body connected in sequence, and the positioning channel simultaneously passes through the holding cylinder, the conical cylinder and the hollow needle body; a positioning notch connected to the positioning channel is provided at one end of the holding cylinder away from the hollow needle body.

[0014] Based on the above solution, the outer diameter of the gripping barrel is larger than that of the hollow needle body, which meets the design requirements. When using the hollow needle body for puncture, the operator applies force to the gripping barrel, and the contact area with the gripping barrel is large, which facilitates force application, saves time and effort, and effectively maintains the position of the sleeve needle, reducing operational difficulty and improving the success rate of puncture. At the same time, the outer diameter of the tapered barrel is gradually changing, achieving a smooth connection between the gripping barrel and the hollow needle body.

[0015] In an optional embodiment, the outer circumferential surface of the gripping cylinder is provided with two gripping recesses arranged in its circumferential direction, and the wall surface of each of the gripping recesses is provided with anti-slip grooves.

[0016] Based on the above scheme, by setting two gripping recesses, the operator's fingers can be positioned in the two gripping recesses. First, the gripping recesses can guide the operator to make reasonable contact with the gripping cylinder to improve the puncture efficiency. Second, the gripping recesses can limit the position of the fingers relative to the gripping cylinder, and the fingers can contact the anti-slip grooves and are not easy to slip.

[0017] In an optional embodiment, the solid needle core includes a first handheld cylinder, a first connecting cylinder and a solid needle body connected in sequence, and a first positioning protrusion is provided on the side of the first handheld cylinder close to the solid needle body. The first positioning protrusion is used to engage with the positioning notch to limit the rotation of the solid needle core relative to the sleeve needle.

[0018] Based on the above solution, the outer diameter of the first handheld barrel is larger, and the contact area with the operator's hand is large, so the operator is more stable when holding the first handheld barrel, and puncture is more convenient.

[0019] In an optional embodiment, a weight-reducing hole is provided on the end face of the first handheld cylinder away from the solid needle body; the solid needle core also includes a force plate and a plurality of connecting rods, the force plate is fixedly connected to the hole wall of the weight-reducing hole through the plurality of connecting rods, and the plurality of connecting rods are arranged at intervals around the axis of the weight-reducing hole.

[0020] Based on the above scheme, by setting a force plate, when pushing the solid needle core into the positioning channel of the sleeve needle, the operator's fingers can abut against the force plate, which is conducive to force application; during actual operation, the first handheld cylinder can be clamped by the index finger and middle finger, and then the force plate can be pressed by the thumb, so that the solid needle core can be stably pushed into the sleeve needle.

[0021] In an optional embodiment, an anti-slip structure is provided on the plate surface of the force applying plate away from the solid needle body.

[0022] Based on the above solution, when the operator contacts the force-applying plate, it is not easy to slip, the force is applied stably, and the puncture is stable.

[0023] In an optional embodiment, the hollow biopsy needle includes a second handheld cylinder, a second connecting cylinder and a biopsy needle body connected in sequence, and a second positioning protrusion is provided on the side of the second handheld cylinder close to the biopsy needle body, and the second positioning protrusion is used to engage with the positioning notch to limit the rotation of the hollow biopsy needle relative to the sleeve needle.

[0024] Based on the above solution, when inserting the hollow biopsy needle into the sleeve needle for sampling and puncture, gripping the second hand-held barrel provides a large contact area, a secure grip, and resistance to slipping, ensuring stable and reliable puncture. Furthermore, the cooperation between the second positioning protrusion and the positioning notch limits relative rotation between the hollow biopsy needle and the sleeve needle, improving safety and puncture accuracy.

[0025] In an optional embodiment, the pusher includes an end head, a connecting shell and a pushing rod, the end head is fixedly connected to the pushing rod through the connecting shell; the pushing rod is slidably matched with the positioning channel.

[0026] Based on the above solution, the endpiece can be a cylindrical barrel, and the connecting shell can be a conical shell. The endpiece is connected to the end with a larger outer diameter of the connecting shell, and the end with a smaller outer diameter of the connecting shell is connected to the push rod. The operator holds the endpiece and applies force to the endpiece to use the push rod to push the iodine-containing gelatin sponge stick into the positioning channel, which is easy to operate.

[0027] In an optional embodiment, the iodine-containing gelatin sponge rod has a first end and a second end in its length direction, the first end is used to contact the pushing rod, and the second end is configured as an arc-shaped end.

[0028] Based on the above solution, the second end is used as the delivery front end. The second end is an arc-shaped end with small resistance, which is conducive to entering the puncture channel, thereby stopping bleeding in the puncture channel.

[0029] In an optional embodiment, the end of the pushing rod is configured as a widened structure, and the widened structure is used to contact the iodine-containing gelatin sponge rod.

[0030] Based on the above solution, by widening the front end of the push rod, the widened portion increases the contact area with the iodine-containing gelatin sponge rod, and the external force applied to the iodine-containing gelatin sponge rod is more uniform, which helps push the iodine-containing gelatin sponge rod to move in the positioning channel and enter the puncture channel. In addition, because only the front end of the push rod is widened, the outer diameter of the rest of the push rod is small, making it less likely to directly contact the inner wall surface of the positioning channel, and thus reducing friction.

[0031] The beneficial effects of the puncture kit provided by the embodiment of the utility model include:

[0032] To summarize, the puncture kit provided in this embodiment, when used clinically, select a sleeve needle and a solid needle core of a suitable model for insertion and matching, set the puncture depth according to the preoperative imaging examination, and then insert the sleeve needle and the solid needle core into the patient's body from the set position. When the set depth is reached, the solid needle core is pulled out; then, the hollow biopsy needle is quickly inserted into the positioning channel, and anteroposterior and lateral angiography are performed respectively. After confirming that the hollow biopsy needle is located in the lesion, the puncture needle is used to sample the pathological tissue, and the sample is preserved in a 10% formalin solution. After the hollow biopsy needle completes sampling and leaves the sleeve needle, the iodine-containing gelatin sponge stick is inserted into the positioning channel, and the pusher is used to drive the iodine-containing gelatin sponge stick to move relative to the positioning channel. During this process, when the front end of the iodine-containing gelatin sponge stick is located at the front end of the sleeve needle, the pusher remains stationary, and the sleeve needle is operated to retract it. The iodine-containing gelatin sponge stick gradually leaves the positioning channel, and the sleeve needle is gradually pulled out at the same time, realizing the operation of inserting the iodine-containing gelatin sponge stick and pulling out the sleeve needle at the same time, shortening the operation time and improving the hemostatic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic structural diagram of the sleeve needle provided in this embodiment;

[0035] Figure 2A schematic structural diagram of the solid needle core provided in this embodiment;

[0036] Figure 3 A schematic diagram of a portion of the structure of the solid needle core provided in this embodiment;

[0037] Figure 4 A schematic diagram of the structure of the hollow biopsy needle provided in this embodiment;

[0038] Figure 5 A schematic diagram of the structure of the pusher provided in this embodiment;

[0039] Figure 6 This is a schematic structural diagram of the iodine-containing gelatin sponge stick provided in this embodiment.

[0040] icon:

[0041] 100-sleeve needle; 101-positioning channel; 110-holding cylinder; 111-holding recess; 120-conical cylinder; 130-hollow needle body; 140-positioning notch; 200-solid needle core; 210-first hand-held cylinder; 211-weight reduction hole; 220-first connecting cylinder; 230-solid needle body; 240-first positioning protrusion; 250-force plate; 260-connecting rod; 300-hollow biopsy needle; 310-second hand-held cylinder; 320-second connecting cylinder; 330-biopsy needle body; 340-second positioning protrusion; 400-pusher; 410-end; 420-connecting shell; 430-pushing rod; 500-iodine-containing gelatin sponge stick; 510-arc-shaped end. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0045] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0046] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0047] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0048] Please combine Figures 1-6 In this embodiment, the puncture kit includes a sleeve needle 100, a solid needle core 200, a hollow biopsy needle 300, a pusher 400 and an iodine-containing gelatin sponge stick 500. The sleeve needle 100 is provided with a positioning channel 101, and the solid needle core 200 and the hollow biopsy needle 300 can be selectively inserted into the positioning channel 101; the iodine-containing gelatin sponge stick 500 is used to be inserted into the positioning channel 101 after the solid needle core 200 and the hollow biopsy needle 300 are separated from the sleeve needle 100; the pusher 400 is slidably matched with the positioning channel 101, and is used to push the iodine-containing gelatin sponge stick 500 from the positioning channel 101 into the puncture channel.

[0049] Based on the above, the usage of the puncture kit provided in this embodiment includes, for example:

[0050] During clinical use, a sleeve needle 100 of appropriate size is selected and inserted into the solid needle core 200. The puncture depth is set according to preoperative imaging examinations. Then, the sleeve needle 100 and the solid needle core 200 are inserted into the patient's body from the set position. That is, before puncture, the solid needle core 200 is first inserted into the positioning channel 101 of the sleeve needle 100 to seal the positioning channel 101. When the two puncture to the set depth, the solid needle core 200 is removed. Then, the hollow biopsy needle 300 is quickly inserted into the positioning channel 101. Anteroposterior and lateral angiography are performed respectively. After confirming that the hollow biopsy needle 300 is located within the lesion, the puncture needle is used to sample pathological tissue, and the sample is preserved in 10% formalin solution. After the hollow biopsy needle 300 completes sampling and leaves the sleeve needle 100, the iodine-containing gelatin sponge stick 500 is inserted into the positioning channel 101, and the pusher 400 is used to drive the iodine-containing gelatin sponge stick 500 to move relative to the positioning channel 101. During this process, when the front end of the iodine-containing gelatin sponge stick 500 is located at the front end of the sleeve needle 100, the pusher 400 remains stationary, and the sleeve needle 100 is operated to retract it, and the iodine-containing gelatin sponge stick 500 gradually separates from the positioning channel 101, and the sleeve needle 100 is gradually pulled out, thereby realizing the operation of implanting the iodine-containing gelatin sponge stick 500 and pulling out the sleeve needle 100 at the same time, shortening the operation time and improving the hemostatic effect.

[0051] It should be understood that before use, the sleeve needle 100, the solid needle core 200, the hollow biopsy needle 300, the pusher 400 and the iodine-containing gelatin sponge stick 500 are separated, and the solid needle core 200 is first used in conjunction with the sleeve needle 100, and then the solid needle core 200 is pulled out, and the hollow biopsy needle 300 is matched with the sleeve needle 100, and then, the hollow biopsy needle 300 is pulled out, and the iodine-containing gelatin sponge stick 500 is pushed into the sleeve needle 100 by using the pusher 400. As the sleeve needle 100 is pulled out, the iodine-containing gelatin sponge stick 500 is filled in the puncture channel to stop bleeding.

[0052] It should be understood that when using the iodine-containing gelatin sponge stick 500 to stop bleeding, due to its high water absorption and rapid hemostasis, it is absorbed by the body in about a week. Gelatin sponge is absorbable, biodegradable, significantly expands upon absorbing liquid, is non-antigenic, and is non-water-soluble. Its porous structure enables it to absorb up to 45 times its own volume of blood. This expansion creates pressure within the puncture needle tract, activates platelets, and promotes clot formation, thereby achieving hemostasis. Sealing the puncture needle tract with gelatin sponge after percutaneous liver biopsy can also reduce the incidence of tumor rupture and needle tract metastasis. Furthermore, iohexol is a non-ionic contrast agent with advantages such as high hydrophilicity, high tolerance, low viscosity, and low toxicity. It is widely used clinically, has a high safety profile, and rarely causes serious adverse reactions. Using low-dose iohexol as one of the components of the blocking agent can not only clearly show the position of the blocking agent in the puncture needle tract and the blocking effect, but also form a density contrast with bleeding or other complications in the CT image. The iodine-containing gelatin sponge stick 500 of this embodiment has a certain degree of X-ray opacity. With the assistance of a digital subtraction angiography machine, the position of the gelatin sponge stick can be accurately controlled by using a pushing stick 430.

[0053] It is worth noting that the iodine-containing gelatin sponge stick 500 can be developed on a digital subtraction angiography machine, thereby reducing the difficulty of operation, and the iodine-containing gelatin sponge stick 500 matches the size of the positioning channel 101, reducing manual errors, significantly improving the hemostatic effect, and reducing the risk of puncture biopsy.

[0054] Furthermore, the iodine-containing gelatin sponge stick 500 is prepared as follows: iohexol is evenly dispersed in a distilled gelatin solution, stirred, and after foaming, the solution is poured into a mold and frozen to form the iodine-containing gelatin sponge stick 500. This method achieves high molding quality for the iodine-containing gelatin sponge stick 500, which is less likely to become loose during pushing and can be effectively filled within the puncture channel, thereby improving hemostasis, alleviating adverse bleeding conditions during puncture biopsy, reducing surgical bleeding complications, and preventing patients from experiencing hemorrhagic shock due to puncture tract bleeding.

[0055] The following embodiments illustrate the details of the puncture kit of the present application by way of examples.

[0056] Please combine Figure 1In this embodiment, the sleeve needle 100 optionally includes a sequentially connected gripping cylinder 110, a tapered cylinder 120, and a hollow needle body 130. The positioning channel 101 simultaneously passes through the gripping cylinder 110, the tapered cylinder 120, and the hollow needle body 130. A positioning notch 140 is provided at the end of the gripping cylinder 110 away from the hollow needle body 130, which communicates with the positioning channel 101. The outer diameter of the gripping cylinder 110 is larger than that of the hollow needle body 130, and the outer diameter of the hollow needle body 130 meets the design requirements. When the hollow needle body 130 is used for puncture, the operator applies force to the gripping cylinder 110, and the contact area with the gripping cylinder 110 is large, which facilitates force application, saves time and effort, and can effectively maintain the position of the sleeve needle 100, reducing the difficulty of operation and improving the success rate of puncture. At the same time, the outer diameter of the tapered cylinder 120 is gradually changing, achieving a smooth connection between the gripping cylinder 110 and the hollow needle body 130.

[0057] It should be understood that the gripping barrel 110, the tapered barrel 120, and the hollow needle 130 can be configured as an integrated structure, which is convenient for processing and manufacturing, and is less likely to have seams, making puncture safer. The cross-sectional profiles of the gripping barrel 110, the tapered barrel 120, and the hollow needle 130 can all be circular.

[0058] In this embodiment, the outer circumferential surface of the gripping barrel 110 is optionally provided with two gripping recesses 111 arranged in a circumferential direction thereof, and each gripping recess 111 has anti-slip grooves on its wall surface. By providing two gripping recesses 111, the operator's fingers can be positioned in the two gripping recesses 111. Firstly, the gripping recesses 111 guide the operator to make reasonable contact with the gripping barrel 110, thereby improving puncture efficiency. Secondly, the gripping recesses 111 can limit the position of the fingers relative to the gripping barrel 110, so that the fingers come into contact with the anti-slip grooves and are less likely to slip.

[0059] Please combine Figure 2 and Figure 3 In this embodiment, the solid needle core 200 optionally includes a first handheld barrel 210, a first connecting barrel 220, and a solid needle body 230, which are connected in sequence. A first positioning protrusion 240 is provided on the side of the first handheld barrel 210 near the solid needle body 230. The first positioning protrusion 240 is configured to engage with the positioning notch 140 to restrict the solid needle core 200 from rotating relative to the sleeve needle 100. The first handheld barrel 210 has a larger outer diameter and a larger contact area with the operator's hand, making the operator more stable when holding the first handheld barrel 210 and puncture more convenient.

[0060] It should be understood that the first hand-held cylinder 210, the first connecting cylinder 220, and the solid needle 230 can be configured as an integrated structure. After the solid needle core 200 is inserted into the appropriate position within the positioning channel 101, the first positioning protrusion 240 on the first hand-held cylinder 210 precisely engages with the positioning notch 140 on the gripping cylinder 110, and the two are tightly connected and cannot rotate relative to each other.

[0061] In this embodiment, optionally, a weight-reducing hole 211 is provided on the end face of the first handheld cylinder 210 away from the solid needle body 230; the solid needle core 200 further comprises a force-applying plate 250 and a plurality of connecting rods 260, wherein the force-applying plate 250 is fixedly connected to the hole wall of the weight-reducing hole 211 via the plurality of connecting rods 260, and the plurality of connecting rods 260 are arranged at intervals around the axis of the weight-reducing hole 211. By providing the force-applying plate 250, when pushing the solid needle core 200 into the positioning channel 101 of the sleeve needle 100, the operator's fingers can abut against the force-applying plate 250, facilitating force application; in actual operation, the first handheld cylinder 210 can be clamped by the index finger and the middle finger, and then the force-applying plate 250 can be pressed by the thumb, so that the solid needle core 200 can be stably pushed into the sleeve needle 100.

[0062] It should be understood that the force applying plate 250 may be a circular plate, and three connecting rods 260 may be provided around the force applying plate 250 .

[0063] Furthermore, an anti-slip structure is provided on the surface of the force-applying plate 250 away from the solid needle body 230. When the operator contacts the force-applying plate 250, it is not easy to slip, the force is applied stably, and the puncture is stable.

[0064] Please combine Figure 4 In this embodiment, optionally, the hollow biopsy needle 300 includes a second handheld barrel 310, a second connecting barrel 320 and a biopsy needle body 330 connected in sequence. A second positioning protrusion 340 is provided on one side of the second handheld barrel 310 close to the biopsy needle body 330. The second positioning protrusion 340 is used to be plugged into and cooperated with the positioning notch 140 to limit the rotation of the hollow biopsy needle 300 relative to the sleeve needle 100.

[0065] It should be understood that when hollow biopsy needle 300 is inserted into sleeve needle 100 for sampling and puncture, gripping second hand-held barrel 310 provides a large contact area, a secure grip, and resistance to slippage, ensuring stable and reliable puncture. Furthermore, the cooperation between second positioning protrusion 340 and positioning notch 140 limits relative rotation between hollow biopsy needle 300 and sleeve needle 100, improving safety and puncture accuracy.

[0066] It should be noted that the second handheld cylinder 310 , the second connecting cylinder 320 and the biopsy needle 330 can be set as an integrated structure, which has high structural strength, is not easily deformed during use, and has a long service life.

[0067] Please combine Figure 5 In this embodiment, optionally, the pusher 400 includes an end 410, a connecting shell 420, and a pushing rod 430. The end 410 is fixedly connected to the pushing rod 430 through the connecting shell 420; the pushing rod 430 is slidably matched with the positioning channel 101. The end 410 can be a cylindrical tube, and the connecting shell 420 can be a conical shell. The end 410 is connected to the end with a larger outer diameter of the connecting shell 420, and the end with a smaller outer diameter of the connecting shell 420 is connected to the pushing rod 430. The operator holds the end 410 and applies force to the end 410 to use the pushing rod 430 to push the iodine-containing gelatin sponge stick 500 into the positioning channel 101, which is easy to operate.

[0068] It should be understood that the end head 410, the connecting shell 420 and the pushing rod 430 can be provided as an integrated structure, and the pushing rod 430 can be a solid rod or a hollow rod, etc.

[0069] Please combine Figure 6 In this embodiment, the iodine-containing gelatin sponge stick 500 optionally has a first end and a second end in its length direction, the first end being used to contact the push rod 430, and the second end being configured as an arcuate end 510. The second end is used as a delivery front end, and the second end being the arcuate end 510 has low resistance, facilitating entry into the puncture channel, thereby stopping bleeding in the puncture channel.

[0070] In the present embodiment, optionally, the end 410 of the push rod 430 is set to a widened structure, and the widened structure is used to contact the iodine-containing gelatin sponge rod 500. By widening the front end portion of the push rod 430, when the widened portion contacts the iodine-containing gelatin sponge rod 500, the contact area between the two is large, and the external force applied to the iodine-containing gelatin sponge rod 500 is more uniform, which is conducive to promoting the iodine-containing gelatin sponge rod 500 to move in the positioning channel 101 and enter the puncture channel. And because only the front end of the push rod 430 is widened, the outer diameter of the remaining positions of the push rod 430 is small, it is not easy to directly contact the inner wall surface of the positioning channel 101, and the friction force is small.

[0071] For example, the pushing rod 430 includes a cylindrical rod and a disc. The disc is fixed at one end of the cylindrical rod, and the two are coaxially arranged. The outer diameter of the disc is larger than the outer diameter of the cylindrical rod. The disc is a widened structure. The disc is used to contact the iodine-containing gelatin sponge rod 500, and the contact area is large, so the pushing is stable and reliable.

[0072] The puncture kit provided in this embodiment is easy to operate and has a good hemostatic effect.

[0073] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A puncture kit, characterized in that: include: A sleeve needle (100), a solid needle core (200), a hollow biopsy needle (300), a pusher (400) and an iodine-containing gelatin sponge stick (500), wherein the sleeve needle (100) is provided with a positioning channel (101), and the solid needle core (200) and the hollow biopsy needle (300) can be selectively inserted into the positioning channel (101); the iodine-containing gelatin sponge stick (500) is used to be inserted into the positioning channel (101) after the solid needle core (200) and the hollow biopsy needle (300) are separated from the sleeve needle (100); the pusher (400) is slidably matched with the positioning channel (101) and is used to push the iodine-containing gelatin sponge stick (500) from the positioning channel (101) into the puncture channel.

2. The puncture kit according to claim 1, characterized in that: The sleeve needle (100) includes a holding cylinder (110), a conical cylinder (120) and a hollow needle body (130) connected in sequence, and the positioning channel (101) simultaneously passes through the holding cylinder (110), the conical cylinder (120) and the hollow needle body (130); the end of the holding cylinder (110) away from the hollow needle body (130) is provided with a positioning notch (140) connected to the positioning channel (101).

3. The puncture kit according to claim 2, characterized in that: The outer peripheral surface of the gripping cylinder (110) is provided with two gripping recesses (111) arranged in the circumferential direction thereof, and the wall surface of each gripping recess (111) is provided with anti-slip grooves.

4. The puncture kit according to claim 2, characterized in that: The solid needle core (200) comprises a first handheld cylinder (210), a first connecting cylinder (220) and a solid needle body (230) connected in sequence, and a first positioning protrusion (240) is provided on a side of the first handheld cylinder (210) close to the solid needle body (230), and the first positioning protrusion (240) is used to engage with the positioning notch (140) to limit the rotation of the solid needle core (200) relative to the sleeve needle (100).

5. The puncture kit according to claim 4, characterized in that: A weight-reducing hole (211) is provided on the end face of the first handheld cylinder (210) away from the solid needle body (230); the solid needle core (200) further comprises a force-applying plate (250) and a plurality of connecting rods (260); the force-applying plate (250) is fixedly connected to the hole wall of the weight-reducing hole (211) via the plurality of connecting rods (260); and the plurality of connecting rods (260) are arranged at intervals around the axis of the weight-reducing hole (211).

6. The puncture kit according to claim 5, characterized in that: An anti-slip structure is provided on the plate surface of the force applying plate (250) away from the solid needle body (230).

7. The puncture kit according to claim 2, characterized in that: The hollow biopsy needle (300) comprises a second handheld barrel (310), a second connecting barrel (320) and a biopsy needle body (330) connected in sequence, and a second positioning protrusion (340) is provided on a side of the second handheld barrel (310) close to the biopsy needle body (330). The second positioning protrusion (340) is used to engage with the positioning notch (140) to limit the rotation of the hollow biopsy needle (300) relative to the sleeve needle (100).

8. The puncture kit according to claim 1, characterized in that: The pusher (400) includes an end (410), a connecting shell (420) and a pushing rod (430), wherein the end (410) is fixedly connected to the pushing rod (430) through the connecting shell (420); the pushing rod (430) is slidably matched with the positioning channel (101).

9. The puncture kit according to claim 8, characterized in that: The iodine-containing gelatin sponge rod (500) has a first end and a second end in its length direction, the first end is used to contact the pushing rod (430), and the second end is configured as an arc-shaped end (510).

10. The puncture kit according to claim 8, characterized in that: The end (410) of the pushing rod (430) is configured as a widened structure, and the widened structure is used to contact the iodine-containing gelatin sponge rod (500).

Images