Abdominal cavity puncture needle

Abstract

The utility model provides an abdominal cavity puncture needle, relates to the technical field of medical instruments, and solves the technical problems that in the prior art, when a puncture needle is used for puncturing, the puncture process mainly depends on perception of an operator, misjudgment is likely to happen, and the abdominal cavity structure of the human body is damaged. The device is an abdominal cavity puncture needle and comprises a half lining sheath used for forming a channel in the abdominal cavity puncture process; the inner core assembly is slidably arranged in the half lining sheath in a penetrating mode, and a puncture tip is arranged at the front end of the inner core assembly; the inner core assembly comprises a through hole formed in the center, and the through hole penetrates through the length direction of the inner core assembly and is used for containing normal saline; after the puncture tip penetrates through the abdominal wall, under the action of abdominal pressure in the abdominal cavity, whether the half-lining sheath correctly enters the abdominal cavity or not can be judged by observing the displacement change of normal saline in the injector, and whether the puncture needle successfully penetrates into the abdominal cavity or not can be visually displayed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an abdominal puncture needle. Background Art

[0002] Ventriculoperitoneal shunt is a common surgical method in neurosurgery, mainly used for the treatment of hydrocephalus. Its principle is mainly to puncture a drainage tube into the ventricle through minimally invasive surgery. This drainage tube is generally made of silicone material with good tissue compatibility, also known as the ventricular end shunt tube. The ventricular end shunt tube is connected to another drainage tube (also known as the abdominal end shunt tube) through a shunt valve, and enters the abdominal cavity through a subcutaneous tunnel. The excess cerebrospinal fluid in the brain is drained into the abdominal cavity through this shunt system, and the greater omentum in the abdominal cavity can absorb the cerebrospinal fluid into the blood, thus effectively relieving the symptoms of hydrocephalus.

[0003] Generally, when placing the shunt tube into the abdominal cavity, there are currently three common methods: open laparotomy under direct vision, laparoscopic assistance, and puncture needle puncture. The current puncture needle is generally composed of a metal semi-lined outer sheath and a metal rod core that are movably inserted. When puncturing, only a skin incision of about 1 cm needs to be made, and the tail of the puncture needle is held and inserted into the abdominal cavity, thereby passing through the subcutaneous soft tissue, rectus abdominis muscle, and peritoneum. During the process, there are two breakthrough and falling sensations. The first is penetrating the fascia of the anterior sheath of the rectus abdominis muscle, and the second is penetrating the peritoneum into the abdominal cavity. Then, the needle core is withdrawn, and the semi-lined outer sheath is left in place. The abdominal end shunt tube is inserted into the abdominal cavity along the semi-lined outer sheath without resistance, and then the semi-lined outer sheath is removed.

[0004] Puncture needle puncture is simple, fast, and minimally invasive, and is widely used in surgery. However, due to the lack of direct vision during puncture, it highly depends on the operator's hand feeling and experience, and it is easy to puncture too shallow or too deep. If the patient's abdominal soft tissue is thick and loose, there may be a false second breakthrough and falling sensation, so that the shunt tube coils in the loose abdominal soft tissue layer without entering the abdominal cavity; if the patient's peritoneum is thin, the second breakthrough and falling sensation is not obvious. In order to find the second breakthrough feeling, the operator inserts the puncture needle too deep, which is very likely to damage the intra-abdominal structures.

[0005] Therefore, it is urgent to develop an abdominal puncture needle to solve the above technical problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an abdominal puncture needle to solve the technical problem that in the prior art, during the puncture process using a puncture needle, it mainly depends on the operator's perception, and it is easy to make misjudgments, resulting in damage to the abdominal cavity structure. The preferred technical solutions provided by the utility model can produce many technical effects, which will be elaborated in detail below.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A peritoneal puncture needle provided by the utility model comprises:

[0009] A semi-lined outer sheath, having a shape and size adapted to peritoneal puncture, for forming a channel during peritoneal puncture, and the channel allows the peritoneal end shunt tube to pass through;

[0010] An inner core assembly, slidably inserted into the semi-lined outer sheath, and a puncture tip is provided at the front end of the inner core assembly, and the puncture tip protrudes from the front end of the semi-lined outer sheath for penetrating the abdominal wall into the abdominal cavity;

[0011] The inner core assembly includes a through hole provided in the center, and the through hole runs through the length direction of the inner core assembly for accommodating physiological saline; when the puncture tip penetrates the abdominal wall, under the action of the abdominal pressure in the abdominal cavity, the displacement change of the physiological saline in the through hole can be observed to judge whether the semi-lined outer sheath has entered the abdominal cavity correctly.

[0012] Further, the inner core assembly includes an inner tube fixedly connected to the top of the puncture tip, the through hole is opened along the center of the inner tube, and a side hole communicating with the through hole is opened on the side wall of the inner core connected to the puncture tip.

[0013] Further, the side hole abuts against the side wall of the semi-lined outer sheath for sealing during the puncture process of the puncture tip.

[0014] Further, the semi-lined outer sheath wraps half of the inner tube along the circumferential direction, an arc-shaped groove is opened on the semi-lined outer sheath along the circumferential direction, a push rod sliding along the arc-shaped groove is fixedly connected to the inner tube, and the push rod rotates along the arc-shaped groove for driving the inner tube to rotate and changing the position of the side hole.

[0015] Further, the inner core assembly further includes a spring and a sealing ring, a ring groove is opened on the top of the inner tube along its circumferential direction, the depth of the ring groove is arranged along the axial direction of the inner tube, the spring is sleeved on the inner tube and abuts against the bottom surface of the ring groove, the sealing ring is fixed to the top end of the semi-lined outer sheath for abutting against the spring, and a sliding groove communicating with the arc-shaped groove is opened on the semi-lined outer sheath along the axial direction, and the push rod is at the communication point of the sliding groove and the arc-shaped groove during the puncture process of the puncture tip and when the spring is in a compressed state.

[0016] Further, the inner core assembly further includes a rotating ring for driving the sealing ring to rotate, the rotating ring is sleeved on the semi-lined outer sheath and fixedly connected to the sealing ring, and the sealing ring is screwed on the semi-lined outer sheath.

[0017] Further, the inner core assembly includes a tail cylinder fixedly connected to the inner tube, a receiving cavity communicating with the through hole is opened inside the tail cylinder, and the receiving cavity is used for accommodating physiological saline.

[0018] Further, the diameter of the end of the tail tube connected to the end of the inner tube is larger than the diameter of the inner tube. A positioning surface is provided at the end of the tail tube connected to the inner tube. When the spring pushes the inner tube out, the positioning surface abuts against the end face of the semi-lining outer sheath.

[0019] Further, a sleeve is sleeved on the semi-lining outer sheath, and the sleeve is slidably arranged along the axial direction of the semi-lining outer sheath.

[0020] Further, the end of the semi-lining outer sheath for puncturing the abdominal cavity is tapered.

[0021] The abdominal puncture needle provided by the utility model can visually show whether the puncture needle successfully penetrates into the abdominal cavity by arranging a through hole in the center of the inner core assembly and filling it with physiological saline and utilizing the abdominal pressure in the abdominal cavity. This improvement significantly improves the accuracy and safety of the puncture process. The specific technical effects are as follows:

[0022] Improve puncture accuracy: The judgment of the puncture depth of traditional puncture needles depends on the operator's hand feeling and experience, which is easily affected by subjective factors. The utility model provides an objective judgment basis by observing the displacement change of physiological saline in the through hole, reducing the situation of too shallow or too deep puncture caused by misjudgment of hand feeling, and improving the puncture accuracy.

[0023] Reduce the risk of abdominal injury: Since the process of the puncture needle entering the abdominal cavity is more precisely controlled, it can effectively avoid the damage to the internal structures in the abdominal cavity caused by the puncture needle being inserted too deep, reducing the risk of surgical complications.

[0024] Enhance surgical safety: For patients with thicker abdominal soft tissues or thinner peritoneum, the puncture needle of the utility model can provide a more reliable judgment of the puncture depth, avoiding the trouble of false breakthrough feeling of falling through or unclear breakthrough feeling, and enhancing the surgical safety.

[0025] Simplify the operation process: Through the intuitive displacement change of physiological saline, the operator can quickly judge the puncture state, without relying too much on experience and hand feeling, simplifying the puncture operation process, shortening the operation time, and reducing the burden on the patient.

[0026] Improve patient satisfaction: Since the improvement of the puncture needle reduces the surgical risk and improves the surgical success rate, the risk of complications during the postoperative recovery process of the patient is reduced, improving the patient's satisfaction with the surgical treatment.

[0027] In summary, the abdominal puncture needle of the utility model not only solves the problems existing in the prior art, but also significantly improves the accuracy and safety of the surgical operation, and has important application value in clinical practice. Through the utility model, a safer, more efficient and more accurate ventriculoperitoneal shunt can be realized, providing better medical services for patients. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is the overall structural schematic diagram provided by the embodiment of the present invention;

[0030] Figure 2 is the axonometric view of the overall structure provided by the embodiment of the present invention;

[0031] Figure 3 is the internal cross-sectional view provided by the embodiment of the present invention;

[0032] Figure 4 is Figure 3 the enlarged view at Q in

[0033] Explanation of the reference numerals: 100, semi-lining outer sheath; 110, tail cylinder; 111, container cavity; 112, positioning surface; 120, arc groove; 130, sliding groove; 140, sleeve; 200, inner core assembly; 210, puncture tip; 220, inner tube; 221, ring groove; 222, side hole; 223, through hole; 230, spring; 240, rotating ring; 250, push rod; 260, sealing ring. Detailed implementation manners

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will describe the technical solutions of the present invention in detail. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present invention.

[0035] In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The following further elaborates on this application in conjunction with Figure 1 —4. The embodiment of this application discloses an abdominal puncture needle.

[0038] Referring to Figure 1 and Figure 2 As shown, an abdominal puncture needle includes a semi-lined outer sheath 100 and an inner core assembly 200. The semi-lined outer sheath 100 has a shape and size adapted to abdominal puncture, and forms a channel in the abdominal cavity during puncture, and this channel allows the shunt tube to be inserted into the abdominal cavity end during subsequent surgical operations to pass through. The inner core assembly 200 can slide through the semi-lined outer sheath 100, and during puncture, by setting a through hole 223 in the center of the inner core assembly 200 and filling it with physiological saline, under the action of the abdominal pressure in the abdominal cavity, it can visually show whether the puncture needle has successfully penetrated into the abdominal cavity.

[0039] Referring to Figure 1 and Figure 2 As shown, the end of the semi-lined outer sheath 100 for puncturing the abdominal cavity is tapered, that is, the head end of the semi-lined outer sheath 100 has a tip in the middle and inclined sides on both sides, so as to reduce the resistance during puncture into the abdominal cavity. The sharp front end can more easily penetrate the abdominal wall tissue, and the inclined sides on both sides help to guide the puncture direction, while reducing the cutting and damage to the surrounding tissues, ensuring that the puncture process is smoother and safer.

[0040] The shape and size of the semi-lined outer sheath 100 are set in different sizes, lengths, and diameters according to medical surgical adaptations. And the cross-section of the semi-lined outer sheath 100 perpendicular to the axial direction is semi-circular, that is, one side of the semi-lined outer sheath 100 is provided with an opening to facilitate the installation of the inner core assembly 200 before surgery and the direct visual observation during the adjustment process of the inner core assembly 200. It is crucial to ensure the correct positioning of the inner core assembly 200, thus avoiding possible errors during the surgical process. And during the postoperative cleaning process, it is convenient to thoroughly clean the semi-lined outer sheath 100 to ensure that there are no residues hidden in inaccessible corners, thereby preventing bacterial growth and reducing the infection risk, ensuring the hygiene standards of medical equipment.

[0041] Referring Figure 1 and Figure 2 As shown, the inner core assembly 200 includes an inner tube 220. The inner tube 220 is inserted through the semi-lined outer sheath 100, and a puncture tip 210 is provided at the front end of the inner tube 220 for penetrating the abdominal wall into the abdominal cavity. This tip protrudes from the front end of the semi-lined outer sheath 100, making the puncture tip 210 the component that first contacts the target area in the entire puncture needle device. The protruding design of the puncture tip 210 is to ensure that during the puncture process, the tip can effectively penetrate the abdominal wall and smoothly enter the abdominal cavity, thus achieving accurate puncture positioning and entering the target area.

[0042] A through hole 223 is provided at the center of the inner tube 220 and runs through along the axis of the inner tube 220. Side holes 222 for communicating with the through hole 223 are provided on the side wall of the inner tube 220. Thus, during the puncture process, normal saline can be injected into the through hole 223. However, when puncturing into the abdominal cavity, under the action of abdominal pressure, the normal saline in the through hole 223 flows into the abdominal cavity. Thus, it is judged whether the abdominal cavity puncture is successful by observing the displacement change of the normal saline in the through hole 223. It is also possible to connect an external device to a bottle filled with normal saline, and determine the success of the abdominal cavity puncture when the level of the filled normal saline changes.

[0043] By providing the side holes 222 on the side wall of the inner tube 220, the flow of normal saline flows out from the side wall of the inner tube 220, and the end of the through hole 223 of the inner tube 220 is avoided from directly facing the puncture direction of the inner tube 220. Thus, it is avoided that the skin tissue blocks the side holes 222 during the puncture process, thereby avoiding the situation that the normal flow of normal saline is affected due to blockage, and avoiding affecting the judgment of whether the abdominal cavity puncture is successfully completed.

[0044] Before puncture, the inner tube 220 can adjust the position of the side hole 222 by rotating the inner tube 220, so that the side hole 222 just corresponds to and abuts against the inner wall of the semi-lined outer sheath 100 during puncture, thereby realizing the blockage of the side hole 222, so as to avoid the influence of the flow of normal saline on the judgment of the puncture situation during puncture. And to avoid the skin tissue on the side wall of the incision from blocking the side hole 222 during puncture, which affects the flow of normal saline after successful puncture.

[0045] The inner core assembly 200 further includes a tail cylinder 110 fixedly connected to the tail end of the inner tube 220. An accommodation cavity communicating with the through hole 223 is provided inside the tail cylinder 110. The accommodation cavity is used to accommodate normal saline, so that when the abdominal puncture is successful, it is easier to judge the displacement change of the normal saline.

[0046] The inner core assembly 200 further includes a push rod 250. The push rod 250 is fixedly connected to the outer side wall of the inner tube 220 and extends outward along the radial direction of the inner tube 220. The semi-lined outer sheath 100 is provided with an arc-shaped groove 120 along the circumferential direction. The push rod 250 is slidably arranged in the arc-shaped groove 120. And the arc-shaped groove 120 is opened at the axial side wall end of the semi-lined outer sheath 100, so that the push rod 250 can be inserted into the arc-shaped groove 120 from the side wall opening during the installation process, so as to realize the precise positioning of the inner tube 220 during the installation process. And when the inner tube 220 is rotated so that the side hole 222 is blocked by the inner wall of the semi-lined outer sheath 100, it just rotates the push rod 250 along the arc-shaped groove 120 to complete, so as to ensure the complete sealing of the side hole 222.

[0047] Refer to Figure 3 and Figure 4 As shown, the inner core assembly 200 further includes a spring 230 and a sealing ring 260. A ring groove 221 is provided at the top of the inner tube 220 along its circumferential direction. The depth of the ring groove 221 is set along the axial direction of the inner tube 220. The spring 230 is sleeved in the ring groove 221. The sealing ring 260 is sleeved on the inner tube 220 and screwed to the top end of the semi-lined outer sheath 100. One end of the spring 230 abuts against the bottom surface of the ring groove 221, and the other end of the spring 230 abuts against the sealing ring 260.

[0048] And a sliding groove 130 is provided on the side wall of the semi-lined outer sheath 100 along its axial direction. The sliding groove 130 communicates with the arc-shaped groove 120. When performing abdominal puncture, the inner tube 220 contracts inward under the hindering effect of the skin tissue, and at this time the spring 230 is in a compressed state. At the same time, the push rod 250 is at the communication point of the sliding groove 130 and the arc-shaped groove 120.

[0049] When penetrating the abdominal cavity, the inner tube 220 is not obstructed by the skin tissue. At this time, the spring 230 pushes the inner tube 220 to slide inward and protrude, and generates vibrations to remind medical staff to complete the penetration. At the same time, the side holes 222 are detached from the sealing of the inner wall of the semi-lined outer sheath 100, and the physiological saline located inside the tail cylinder 110 flows, further verifying the success of abdominal puncture. Moreover, the sliding of the inner tube 220 releases the sealing of the side holes 222, which can reduce the secondary injury to the patient caused by the unsealing of the side holes 222 completed by rotating the inner tube 220.

[0050] At the same time, the push rod 250 slides along the chute 130. The chute 130 provides guidance for the sliding of the inner tube 220, and the bottom surface of the chute 130 blocks the push rod 250, thus preventing the inner tube 220 from sliding excessively under the action of the spring 230 and causing harm to the internal tissues of the abdominal cavity.

[0051] Among them, the diameter of the end of the tail cylinder 110 connected to the inner tube 220 is larger than the diameter of the inner tube 220, that is, a positioning surface 112 is provided at the end of the tail tube connected to the inner tube 220. When the spring 230 pushes the inner tube 220 to pop out, its positioning surface 112 abuts against the end surface of the semi-lined outer sheath 100, thereby realizing the obstruction of the excessive sliding of the inner tube 220, further realizing the blockage of the excessive sliding of the inner tube 220, and preventing the inner tube 220 from sliding excessively under the action of the spring 230 and causing harm to the internal tissues of the abdominal cavity.

[0052] Refer to Figure 3 and Figure 4 As shown, the inner core assembly 200 further includes a rotating ring 240 fixedly connected to the sealing ring 260. The rotating ring 240 is sleeved on the semi-lined outer sheath 100 and can rotate along the circumferential direction of the semi-lined outer sheath 100. In this way, during the connection process, the sealing ring 260 can be rotated and fixed and disassembled by rotating the rotating ring 240. Moreover, the sealing ring 260 is preferably provided with one and a half turns of threads, thus facilitating the disassembly of the inner tube 220.

[0053] In this way, during the disassembly process, the sealing ring 260 can be detached from the semi-lined outer sheath 100 by rotating the rotating ring 240. At this time, the pushing of the spring 230 is released, and the inner tube 220 is pulled to slide outwards in the semi-lined outer sheath 100. When the push rod 250 is located at the connection point of the chute 130 and the arc-shaped groove 120, the push rod 250 is rotated to slide along the arc-shaped groove 120, and at the same time, the inner tube 220 is driven to rotate. When the push rod 250 slides out of the arc-shaped groove 120, the inner tube 220 is pulled to drive the spring 230, as well as the sealing ring 260 and the rotating sleeve sleeved on the push rod 250 to simultaneously disengage from the semi-lined outer sheath 100. At the same time, the semi-lined outer sheath 100 is inserted into the puncture hole for subsequent insertion operation of the shunt tube.

[0054] A sleeve 140 is sleeved on the half-lined outer sheath 100. The sleeve 140 is slidably arranged along the axial direction of the half-lined outer sheath 100. During the puncture process, medical staff can hold the sleeve 140 to push the half-lined outer sheath 100 and the inner tube 220 on the half-lined outer sheath 100 to perform the puncture action. The sleeve 140 being slidably arranged along the axial direction of the half-lined outer sheath 100 means that it can precisely control the puncture depth without changing the puncture angle.

[0055] This design allows medical staff to smoothly advance or retract the sleeve 140 as needed, thereby driving the half-lined outer sheath 100 and the inner tube 220 thereon to perform the puncture or withdrawal action, ensuring precise control of the puncture depth. The sleeve 140 also plays a certain protective role during the puncture process. It can prevent impurities in the external environment from entering the puncture channel, and at the same time form a certain degree of physical support for the outer sheath during the puncture process, reducing the risk of puncture needle deviation. By advancing or retracting the sleeve 140, the movement of the inner tube 220 can be effectively guided to ensure that the inner tube 220 advances along the preset puncture path and avoid unnecessary bending or deviation during the puncture process, which is crucial for ensuring the success rate of the puncture.

[0056] As described above, only the specific implementation manners of the present utility model are provided, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. An abdominal puncture needle, characterized in that, Comprising: A semi-lined outer sheath (100), having a shape and size adapted for abdominal puncture, for forming a channel during abdominal puncture, which channel allows the passage of an abdominal end shunt tube; An inner core assembly (200), slidably passing through the semi-lined outer sheath (100), a puncture tip (210) being provided at the front end of the inner core assembly (200), and the puncture tip (210) protruding from the front end of the semi-lined outer sheath (100) for penetrating the abdominal wall and entering the abdominal cavity; The inner core assembly (200) includes a through hole (223) provided in the center, which through hole (223) runs through the length direction of the inner core assembly (200) for containing physiological saline; when the puncture tip (210) penetrates the abdominal wall, under the action of the abdominal pressure in the abdominal cavity, it is possible to judge whether the semi-lined outer sheath (100) has correctly entered the abdominal cavity by observing the displacement change of the physiological saline in the through hole (223).

2. The abdominal puncture needle according to claim 1, characterized in that, The inner core assembly (200) includes an inner tube (220) fixedly connected to the top of the puncture tip (210), the through hole (223) is opened along the center of the inner tube (220), and side holes (222) communicating with the through hole (223) are provided on the side wall of the inner core connected to the puncture tip (210).

3. The abdominal puncture needle according to claim 2, characterized in that, The side holes (222) are abutted against the side wall of the semi-lined outer sheath (100) for sealing during the puncture process of the puncture tip (210).

4. The abdominal puncture needle according to claim 3, characterized in that, The semi-lined outer sheath (100) is wrapped half-way along the circumferential direction of the inner tube (220), an arc-shaped groove (120) is provided in the semi-lined outer sheath (100) along the circumferential direction, a push rod (250) slidably connected along the arc-shaped groove (120) is fixedly connected to the inner tube (220), and the push rod (250) rotates along the arc-shaped groove (120) for driving the inner tube (220) to rotate and changing the position of the side holes (222).

5. The abdominal puncture needle according to claim 4, wherein, The inner core assembly (200) further includes a spring (230) and a sealing ring (260), a ring groove (221) is provided along the circumferential direction at the top of the inner tube (220), the depth of the ring groove (221) is arranged along the axial direction of the inner tube (220), the spring (230) is sleeved on the inner tube (220) and abuts against the bottom surface of the ring groove (221), the sealing ring (260) is fixed to the top end of the semi-lined outer sheath (100) for abutting against the spring (230), a sliding groove (130) communicating with the arc-shaped groove (120) is provided in the semi-lined outer sheath (100) along the axial direction, and the push rod (250) is at the communication point of the sliding groove (130) and the arc-shaped groove (120) during the puncture process of the puncture tip (210) and in the state where the spring (230) is compressed.

6. The abdominal puncture needle according to claim 5, wherein, The inner core assembly (200) further includes a rotating ring (240) for driving the sealing ring (260) to rotate, the rotating ring (240) is sleeved on the semi-lined outer sheath (100) and fixedly connected to the sealing ring (260), and the sealing ring (260) is screwed onto the semi-lined outer sheath (100).

7. The peritoneal puncture needle according to claim 5, characterized in that, The inner core assembly (200) includes a tail cylinder (110) fixedly connected to the inner tube (220). An accommodation cavity communicating with the through hole (223) is formed inside the tail cylinder (110), and the accommodation cavity is used for accommodating physiological saline.

8. The abdominal puncture needle according to claim 7, characterized in that, The diameter of the end of the tail cylinder (110) connected to the inner tube (220) is larger than the diameter of the inner tube (220). A positioning surface (112) is provided at the end of the tail cylinder (110) connected to the inner tube (220). When the spring (230) pushes the inner tube (220) to pop out, the positioning surface (112) abuts against the end face of the semi-lined outer sheath (100).

9. A peritoneal puncture needle according to claim 1, characterized in that, A sleeve (140) is sleeved on the semi-lined outer sheath (100), and the sleeve (140) is slidably arranged along the axial direction of the semi-lined outer sheath (100).

10. A peritoneal puncture needle according to claim 1, characterized in that, The end of the semi-lined outer sheath (100) for puncturing the abdominal cavity is tapered.

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