A hernia needle

Abstract

This utility model discloses a hernia needle, relating to the field of medical device technology, and solves the technical problems of easy suture slippage and unstable needle insertion during the operation of existing devices. This utility model includes a needle core, a needle sheath, and a gripping operation component. The needle core is sleeved inside the needle sheath, which is connected to and internally communicates with the gripping operation component. The needle core is connected to the gripping operation component. The front end of the needle core has at least one hook groove, and a limiting groove is formed on the side wall of the hook groove near the front end of the needle core. Both the hook groove and the limiting groove penetrate the needle core on both sides perpendicular to the axis of the needle core. The front end of the needle core has an arc-shaped transition portion, and the limiting groove extends to the arc-shaped transition portion. The inner diameter of the front end of the needle sheath is the same as the diameter of the needle core. This utility model has advantages such as less suture slippage and stable needle core operation.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to a hernia needle. Background Technology

[0002] A hernia occurs when an organ or tissue in the body moves out of its normal anatomical position and enters another part of the body through a weak point, defect, or opening, whether congenital or acquired. Hernias usually occur in the abdomen and include inguinal hernias, femoral hernias, incisional hernias, and umbilical hernias. Symptoms of a hernia typically include a lump in the groin or navel area, a feeling of heaviness or pain, and intestinal obstruction. A hernia needle is a medical device specifically used for hernia surgery. It is usually used in conjunction with minimally invasive surgical equipment such as laparoscopy. By using the hernia needle to ligate the hernia sac high and close the hernia ring, the hernia is treated.

[0003] In document CN206499494U, a hernia needle is disclosed, including a grip, a needle tube, a needle handle, a connecting tube, and an air injection tube. The connecting tube can slide into the grip under the push of a push rod, so as to drive the air injection tube to extend out of the needle tube or retract into the needle tube. The air injection tube has a groove for hooking the thread and can complete the thread entry and exit after being fixed with the needle tube. In document CN204931757U, an abdominal hernia needle is disclosed, including a needle core, a needle sheath, a needle sleeve, a spring, and a pressing element. The spring is located inside the needle sleeve. The left end of the needle core is the needle tip, and the right end is connected to the left end of the pressing element through the spring. The pressing element slides inside the needle sleeve. The needle tip at the front end of the needle core has a hook groove for hooking the thread.

[0004] Existing hernia needles generally consist of three main structures: the needle core, the needle sheath, and the gripping part. To facilitate suture hooking, a groove is typically provided at the front end of the needle core. When the needle is withdrawn, the groove hooks the suture, and as the needle core continues to retract, it pulls the suture back into the needle sheath for fixation. However, in existing devices, to prevent the suture from getting stuck during withdrawal, the diameter of the needle core is usually smaller than the diameter of the needle sheath, and a gap is created between the needle core and the needle sheath to accommodate the suture. This allows for the retraction and fixation of the suture. However, the large gap between the needle core and the needle sheath increases the instability of the needle core, affects the precision of the operation, increases the difficulty for the doctor, and may even increase the risk of tissue damage. Furthermore, in existing devices, the groove structure does not effectively restrain the suture, making it easy for the suture to slip off during operation.

[0005] Given the problems with existing patents, it is necessary to research a hernia needle that prevents the suture from slipping during operation and ensures stable needle insertion. Utility Model Content

[0006] This invention provides a hernia needle, which aims to solve the technical problems of easy slippage of sutures and unstable needle insertion during the operation of existing devices.

[0007] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0008] A hernia needle includes a needle core, a needle sheath, and a gripping and operating assembly.

[0009] The needle core is sleeved inside the needle sheath, the needle sheath is connected to and internally communicates with the gripping operation component, and the needle core is connected to the gripping operation component;

[0010] The needle core has at least one hook groove at its front end, and a limiting groove is formed on the side wall of the hook groove near the front end of the needle core. Both the hook groove and the limiting groove penetrate the needle core on both sides.

[0011] The needle core has a transition section at its front end, the diameter of which is smaller than the diameter of the needle core, and the limiting groove extends to the transition section.

[0012] In this utility model, it should first be noted that the needle core is penetrated on both sides of the hook groove and the limiting groove. The sides of the hook groove and the limiting groove refer to the sides perpendicular to the bottom surface of the limiting groove. In actual use, the needle core is first extended by pressing the holding operation component, and the suture is hooked inside the hook groove. Then, the holding operation component is released to retract the needle core into the needle sheath. The tip of the needle core is then used to puncture the patient's tissue. When it is in the corresponding position, the needle core is extended by pressing the holding operation component. During this process, the suture is also brought out, and other tools can be used to separate the suture. After a series of operations, when it is necessary to tie a knot, the needle core is extended by pressing the holding operation component, and the suture is hooked into the hook groove. After releasing the holding operation component, the needle core retracts into the needle sheath, and the suturing operation can be performed.

[0013] In this invention, the hook groove facilitates thread feeding and hooking. During the sewing or hooking process, the suture is pulled into the limiting groove under tension, thereby limiting the suture and preventing it from slipping out during the pulling process. Furthermore, it should be noted that in this invention, the transition part is an arc-shaped transition part, making the front end of the needle core transition smoothly. By setting the limiting groove at the transition part, and due to the arc-shaped transition, the outer diameter of the arc-shaped transition part is smaller than the diameter of the needle core and the inner diameter of the front end of the needle sheath. Therefore, the suture can pass through both sides of the limiting groove, and the distance between the needle core and the needle sheath can be reduced or even kept in contact, thereby improving operational stability.

[0014] Preferably, the limiting groove is provided with a dividing block, and the side of the dividing block facing the hook groove is arc-shaped.

[0015] After adopting this technical solution, it should be noted that the suture separating block has two functions. First, when the suture is pulled, it separates the suture to both sides of the limiting groove, reducing the occurrence of knots. Second, after the suture is placed in the limiting groove and hooked and limited, the arc-shaped surface of the arc block can support the suture during the process of pulling the needle, and provide a more uniform force distribution, reducing the damage or even breakage of the suture caused by local stress concentration.

[0016] Preferably, the hook groove is a dovetail groove, and two hook grooves are symmetrically arranged along the circumference of the needle core.

[0017] After adopting this technical solution, it should be noted that the dovetail groove is convenient for hooking the suture, especially during the process of pulling the suture. The inclined part of the side wall of the dovetail groove is convenient for guiding the suture into the limiting groove for further limiting. The two hook grooves are symmetrically set to facilitate flexible operation.

[0018] Preferably, the arc-shaped surface of the dividing block is provided with an inclined portion, and the inclined direction of the inclined portion is consistent with the inclined direction of the hook groove sidewall on the same side.

[0019] After adopting this technical solution, it should be noted that the inclined part is designed to fit the arc-shaped surface of the dividing block, which is intended to better hook the suture line in the limiting groove and limit its position.

[0020] Furthermore, the gripping operation component includes a connecting cylinder and an operating column. The operating column is sleeved inside the connecting cylinder, and a connecting plate is provided at the front end of the operating column. An elastic element is connected between the connecting cylinder and the connecting plate. The rear end of the needle sheath is connected to the connecting cylinder, and the rear end of the needle core passes through the connecting cylinder and is connected to the connecting plate.

[0021] After adopting this technical solution, it should be noted that the front end of the connecting tube is provided with a through hole for the needle core to pass through. The diameter of the through hole is the same as the inner diameter of the needle sheath. When hooking the thread, the operating column needs to be pressed. The operating column drives the needle core to move forward, so that the hook groove part extends out of the needle sheath. During this process, the elastic element is compressed and generates elastic force. After releasing the hand, the operating column is pushed out to the rear end under the action of the spring force, thereby driving the needle core to retract into the needle sheath and realizing the pull-back of the suture.

[0022] Preferably, the gripping operation component further includes a finger ring and a thumb ring. The finger ring is disposed on the outer wall of the connecting cylinder, and the thumb ring is disposed at the rear end of the operating column. The arrangement of each finger ring facilitates the operator's grip and operation, and improves the stability and accuracy of operation.

[0023] Preferably, a rubber ring is provided between the operating column and the connecting cylinder, and the diameter of the connecting plate is the same as the inner diameter of the connecting cylinder.

[0024] After adopting this technical solution, it should be noted that the connecting plate is made of rubber and has the same inner diameter as the connecting cylinder, so that there is a certain friction when pushing and pulling the operating column, which is convenient for control. In addition, the rubber ring and the connecting plate can limit the needle core by friction when the needle core is stable.

[0025] Preferably, the connecting cylinder is provided with an air outlet, which communicates with the interior of the connecting cylinder.

[0026] After adopting this technical solution, it should be noted that after setting the connecting plate and rubber ring, negative pressure may be generated when the operating column is pulled out, and airflow may be blown into the patient's body when the operating column is pushed forward. Therefore, this air vent is set to prevent negative pressure from being generated and airflow from the needle sheath from blowing into the body when the operating rod is pushed, which may cause harm to the patient.

[0027] Preferably, the front end and the rear end of the needle sheath are respectively provided with a first transition portion and a second transition portion, and the rear end of the second transition portion is connected to the connecting tube.

[0028] After adopting this technical solution, it should be noted that the first transition part at the front end makes the transition between the front end of the needle sheath and the needle core smoother, which facilitates needle insertion; the second transition part at the rear end makes the transition between the needle sheath and the connecting tube smoother, increases the connection area between the needle sheath and the connecting tube, and improves the connection strength and stability.

[0029] Furthermore, the needle core includes a needle tip and a needle body, the front end of the needle body is connected to the needle tip through the arc-shaped transition portion, and the rear end of the needle body is connected to the connecting plate.

[0030] The process of using this utility model:

[0031] Suture delivery: First, press the operating column to extend the needle core and hook the suture inside the hook groove. Then, release the operating column. Under the elastic force of the elastic element, the operating column will pop outward, thereby causing the needle core to retract into the needle sheath. Then, the tip of the needle core will puncture the patient's tissue. When it is in the appropriate position, press the operating column to extend the needle core. During this process, the suture will also be brought out. You can then use other tools to separate the suture, thus completing the suture delivery.

[0032] Thread hooking: When suturing or hooking is required after a series of operations, press the operating column to extend the needle core and hook the suture inside the hook groove. Then release the operating column, and the elastic force of the elastic element will cause the operating column to pop outward, thereby causing the needle core to retract into the needle sheath. Under the action of tension, the suture will be pulled into the limiting groove, thereby limiting the suture and preventing it from slipping off during the pulling process.

[0033] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0034] 1. The hernia needle provided by this utility model facilitates suture feeding and hooking by setting a hook groove, and by setting a limiting groove, the suture will be pulled into the limiting groove under the action of tension during the suturing or hooking process, thereby limiting the suture and preventing the suture from slipping out during the pulling process.

[0035] 2. The hernia needle provided by this utility model sets the limiting groove at the arc-shaped transition part. Due to the setting of the arc-shaped transition part, the outer diameter of the arc-shaped transition part is smaller than the diameter of the needle core and the inner diameter of the front end of the needle sheath. Therefore, the suture can pass out from both sides of the limiting groove, and the distance between the needle core and the needle sheath can be reduced or even kept in contact, thereby improving the operational stability.

[0036] 3. The hernia needle provided by this utility model, by setting a suture dividing block, divides the suture to both sides of the limiting groove when the suture is pulled, reducing the occurrence of knots; in addition, when the suture is placed in the limiting groove and hooked and limited, the arc-shaped surface of the arc block can support the suture during the pulling of the needle, and provides a more uniform force distribution, reducing the damage or even breakage of the suture caused by local stress concentration.

[0037] 4. The hernia needle provided by this utility model can better hook the suture in the limiting groove and limit it by setting an inclined part on the arc-shaped surface of the suture block. Attached Figure Description

[0038] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0039] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0040] Figure 2 This is an overall sectional view of the present invention;

[0041] Figure 3 This is a schematic diagram of the needle core structure of this utility model;

[0042] Figure 4 This utility model Figure 3 Enlarged schematic diagram at point I;

[0043] Figure 5 This utility model Figure 2 Enlarged schematic diagram of section II in the middle.

[0044] Figure label:

[0045] 1-Needle core, 101-Needle tip, 102-Needle body, 2-Needle sheath, 201-First transition section, 202-Second transition section, 3-Connecting cylinder, 4-Operating column, 401-Connecting plate, 5-Finger ring, 6-Thumb ring, 7-Hook groove, 8-Thread divider block, 801-Inclined section, 9-Rubber ring, 10-Elastic element, 11-Limiting groove, 12-Air outlet. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0047] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility product is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] The following is combined Figures 1-5 This utility model will be described in detail. Example 1

[0049] A type of hernia needle, such as Figures 1-5 As shown, it includes a needle core 1, a needle sheath 2, and a gripping and operating assembly.

[0050] The needle core 1 is sleeved inside the needle sheath 2. The needle sheath 2 is connected to and internally communicates with the gripping operation component. The needle core 1 is connected to the gripping operation component.

[0051] The needle core 1 has at least one hook groove 7 at its front end. The hook groove 7 has a limiting groove 11 on its side wall near the front end of the needle core 1. Both the hook groove 7 and the limiting groove 11 penetrate the needle core 1 on both sides.

[0052] The needle core 1 has a transition portion at its front end, the diameter of which is smaller than the diameter of the needle core 1, and the limiting groove 11 extends to the transition portion.

[0053] The gripping operation component includes a connecting cylinder 3 and an operating column 4. The operating column 4 is sleeved inside the connecting cylinder 3. A connecting plate 401 is provided at the front end of the operating column 4. An elastic element 10 is connected between the connecting cylinder 3 and the connecting plate 401. The rear end of the needle sheath 2 is connected to the connecting cylinder 3. The rear end of the needle core 1 is inserted into the connecting cylinder 3 and connected to the connecting plate 401.

[0054] A rubber ring 9 is provided between the operating column 4 and the connecting cylinder 3, and the diameter of the connecting plate 401 is the same as the inner diameter of the connecting cylinder 3.

[0055] The connecting cylinder 3 is provided with an air outlet 12, which communicates with the interior of the connecting cylinder 3.

[0056] The front end and rear end of the needle sheath 2 are respectively provided with a first transition part 201 and a second transition part 202, and the rear end of the second transition part 202 is connected to the connecting tube 3.

[0057] The needle core 1 includes a needle tip 101 and a needle body 102. The front end of the needle body 102 is connected to the needle tip 101 through the arc-shaped transition portion, and the rear end of the needle body 102 is connected to the connecting plate 401.

[0058] In this embodiment, the hook groove 7 facilitates thread feeding and hooking. During the sewing or hooking process, the suture will be pulled into the limiting groove 11 under the action of tension, thereby limiting the suture and preventing it from slipping out during the pulling process. In addition, it should be noted that in this utility model, by setting the limiting groove 11 at the transition part, and due to the arc transition setting, the outer diameter of the arc transition part is smaller than the diameter of the needle core 1 and the inner diameter of the front end of the needle sheath 2. Therefore, the suture can pass through both sides of the limiting groove 11, and the distance between the needle core 1 and the needle sheath 2 can be reduced or even kept in contact, thereby improving the operational stability.

[0059] In this embodiment, pressing the operating column 4 allows the needle core 1 to extend for hooking the line. After releasing, the operating column 4 is pushed out by the elastic force of the elastic element 10, thereby bringing the needle core 5 back into the needle sheath. Example 2

[0060] The difference between this embodiment and embodiment 1 is that the limiting groove 11 is provided with a dividing block 8, and the side of the dividing block 8 facing the hook groove 7 is arc-shaped.

[0061] The hook groove 7 is a dovetail groove, and two hook grooves 7 are symmetrically arranged around the circumference of the needle core 1.

[0062] In this embodiment, the suture separating block 8 has two functions: first, it separates the suture to both sides of the limiting groove 11 when the suture is pulled, reducing the occurrence of knots; second, after the suture is hooked and limited in the limiting groove 11, the arc-shaped surface of the arc block can support the suture during the pulling of the needle, and provide a more uniform force distribution, reducing suture damage or even breakage caused by local stress concentration. In this embodiment, the dovetail groove is convenient for hooking the suture, especially during the pulling of the suture. The inclined part 801 of the side wall of the dovetail groove is convenient for introducing the suture into the limiting groove 11 for further limiting. The two hook grooves 7 are symmetrically arranged for flexible operation. Example 3

[0063] The difference between this embodiment and embodiment 2 is that the arc-shaped surface of the dividing block 8 is provided with an inclined portion 801, and the inclined direction of the inclined portion 801 is consistent with the inclined direction of the side wall of the hook groove 7 on the same side.

[0064] In this embodiment, the inclined portion 801 is designed to fit the arc-shaped surface of the dividing block 8, and its function is to better hook the suture line in the limiting groove 11 and limit it. Example 4

[0065] The difference between this embodiment and embodiment 3 is that the gripping operation component further includes a finger ring 5 and a thumb ring 6. The finger ring 5 is disposed on the outer wall of the connecting cylinder 3, and the thumb ring 6 is disposed at the rear end of the operating column 4. The arrangement of each finger ring facilitates the operator's gripping and operation, and improves the stability and accuracy of operation.

[0066] The process of using this utility model:

[0067] Suture delivery: First, press the operating column 4 to extend the needle core 1 and hang the suture inside the hook groove 7. Then, release the operating column 4. Under the elastic force of the elastic element 10, the operating column 4 will pop outward, thereby causing the needle core 1 to retract into the needle sheath 2. Then, the front end of the needle core 1 will puncture the patient's tissue. When it is in the corresponding position, press the operating column 4 to extend the needle core 1. During this process, the suture will also be brought out. Other tools can then be used to separate the suture, thus completing the suture delivery.

[0068] Hooking the thread: When suturing or hooking the thread is required after a series of operations, press the operating column 4 to extend the needle core 1 and hang the suture inside the hook groove 7. Then release the operating column 4, and under the elastic force of the elastic element 10, the operating column 4 will pop outward, thereby causing the needle core 1 to retract into the needle sheath 2. Under the pulling force, the suture will be pulled into the limiting groove 11, thereby limiting the suture and preventing the suture from slipping during the pulling process.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hernia needle, characterized in that, Includes a needle core (1), a needle sheath (2), and a gripping and operating assembly. The needle core (1) is sleeved inside the needle sheath (2), the needle sheath (2) is connected to the gripping operation component and has internal communication, and the needle core (1) is connected to the gripping operation component; The needle core (1) has at least one hook groove (7) at its front end. The hook groove (7) has a limiting groove (11) on the side wall near the front end of the needle core (1). Both the hook groove (7) and the limiting groove (11) penetrate the needle core (1) on both sides. The needle core (1) has a transition section at its front end. The diameter of the transition section is smaller than the diameter of the needle core (1). The limiting groove (11) extends to the transition section.

2. A hernia needle according to claim 1, characterized in that: The limiting groove (11) is provided with a dividing block (8), and the side of the dividing block (8) facing the hook groove (7) is arc-shaped.

3. A hernia needle according to claim 1 or 2, characterized in that: The hook groove (7) is a dovetail groove, and two hook grooves (7) are symmetrically arranged around the needle core (1).

4. A hernia needle according to claim 2, characterized in that: The arc-shaped surface of the dividing block (8) is provided with an inclined part (801), and the inclined direction of the inclined part (801) is consistent with the inclined direction of the side wall of the hook groove (7) on the same side.

5. A hernia needle according to claim 1 or 2, characterized in that: The gripping operation component includes a connecting cylinder (3) and an operating column (4). The operating column (4) is sleeved inside the connecting cylinder (3). A connecting plate (401) is provided at the front end of the operating column (4). An elastic element (10) is connected between the connecting cylinder (3) and the connecting plate (401). The rear end of the needle sheath (2) is connected to the connecting cylinder (3). The rear end of the needle core (1) is inserted into the connecting cylinder (3) and connected to the connecting plate (401).

6. A hernia needle according to claim 5, characterized in that: The gripping operation component also includes a finger ring (5) and a thumb ring (6), the finger ring (5) being disposed on the outer wall of the connecting cylinder (3) and the thumb ring (6) being disposed at the rear end of the operation column (4).

7. A hernia needle according to claim 5, characterized in that: A rubber ring (9) is provided between the operating column (4) and the connecting cylinder (3), and the diameter of the connecting plate (401) is the same as the inner diameter of the connecting cylinder (3).

8. A hernia needle according to claim 5, characterized in that: The connecting cylinder (3) is provided with an air outlet (12), which is connected to the interior of the connecting cylinder (3).

9. A hernia needle according to claim 5, characterized in that: The front end and rear end of the needle sheath (2) are respectively provided with a first transition part (201) and a second transition part (202), and the rear end of the second transition part (202) is connected to the connecting tube (3).

10. A hernia needle according to claim 5, characterized in that: The needle core (1) includes a needle tip (101) and a needle body (102). The front end of the needle body (102) is connected to the needle tip (101) through the transition portion, and the rear end of the needle body (102) is connected to the connecting plate (401).

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