Puncture needle

Abstract

The utility model discloses a puncture needle, and relates to the technical field of medical instruments. According to the technical key points, the puncture needle comprises a straight tube part and a conical puncture part made of a transparent material, the conical puncture part comprises a left puncture shell and a right puncture shell which are symmetrical, the left puncture shell and the right puncture shell are connected together through a locking sleeve, and the locking sleeve is in threaded connection with the left puncture shell and the right puncture shell which are installed together. Protrusions are arranged in the left puncture shell and the right puncture shell respectively, installation holes connected with the corresponding protrusions in a clamped mode are formed in the straight pipe part, and the puncture needle has the advantage of being convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a puncture needle. Background Art

[0002] A trocar is a surgical instrument that pierces the abdominal wall and provides a passage for other surgical instruments to enter the body cavity. It is a minimally invasive surgical instrument. The trocar usually includes a sleeve assembly that serves as a passage for other surgical instruments to enter the body cavity and a puncture needle that runs through the sleeve assembly.

[0003] A Chinese utility model patent with announcement number CN206138181U discloses a puncture needle, which includes a conical puncture portion, characterized in that the tip of the conical puncture portion is blunt; a cutting blade extending toward the tip of the conical puncture portion is provided on the side of the conical puncture portion, the conical puncture portion is transparent, and an image acquisition device is provided inside the conical puncture portion, and a straight tube portion is connected to one end of the opening of the puncture portion.

[0004] In the prior art, a puncture needle similar to the above-mentioned one has a conical puncture portion and is an integrally formed part, which is inconvenient to clean. As a result, the puncture needle has to be thrown away after being used once, resulting in a waste of resources. Therefore, there is still room for improvement. Utility Model Content

[0005] The utility model aims to provide a puncture needle which has the advantage of being easy to clean.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A puncture needle comprises a straight tube portion and a tapered puncture portion made of a transparent material, wherein the tapered puncture portion comprises a symmetrical left puncture shell and a right puncture shell, wherein the left puncture shell and the right puncture shell are connected together by a locking sleeve, wherein the locking sleeve is threadedly connected to the left puncture shell and the right puncture shell installed together, wherein protrusions are arranged inside the left puncture shell and the right puncture shell, and wherein the straight tube portion is provided with a mounting hole that is clamped with the corresponding protrusion.

[0008] By adopting the above technical solution, when the puncture needle needs to be cleaned, the locking sleeve is rotated, and after the locking sleeve is rotated to disengage from the left puncture shell and the right puncture shell, the left puncture shell, the right puncture shell and the straight tube part can be separated for cleaning; when the puncture needle needs to be installed, the protrusions on the left puncture shell and the right puncture shell are first installed in the installation holes on the corresponding straight tube part, and then the locking sleeve is set on the left puncture shell and the right puncture shell and rotated to lock the left puncture shell and the right puncture shell, so that the installation of the puncture needle can be achieved.

[0009] In summary, compared with the integrally formed conical puncture portion, the left puncture shell and the right puncture shell are combined and sleeved on the straight tube portion, and then the left puncture shell and the right puncture shell installed together are firmly locked by the locking sleeve, so that the left puncture shell and the right puncture shell can be easily separated and cleaned.

[0010] Furthermore, the surfaces where the left puncture shell and the right puncture shell are in contact are provided with sealing grooves extending along the long side directions of the surfaces, and the right puncture shell is provided with a sealing strip engaged with the sealing groove.

[0011] By adopting the above technical solution, when the left puncture shell and the right puncture shell are attached to each other, the sealing strip and the sealing groove are engaged with each other, which can further limit the position of the left puncture shell and the right puncture shell, and play a sealing role on the attached surface of the left puncture shell and the right puncture shell.

[0012] Furthermore, the corners of the sealing groove are all rounded.

[0013] By adopting the above technical solution, the corners of the sealing groove are all rounded, which can facilitate cleaning of the sealing groove and prevent debris from remaining in the sealing groove.

[0014] Furthermore, the sealing strip is made of non-toxic rubber material.

[0015] By adopting the above technical solution, the sealing strip is made of non-toxic rubber material, which can make the sealing strip and the sealing groove fit tightly, further strengthening the sealing effect of the sealing strip and the sealing groove.

[0016] Furthermore, an annular arc groove surrounding the axis of the straight tube portion is provided on the inner walls of the left puncture shell and the right puncture shell and near the opening enclosed by the two, and a sealing ring fitting with the straight tube portion is provided in the annular arc groove.

[0017] By adopting the above technical solution, when the left puncture shell and the right puncture shell are closed and sleeved on the straight tube part, the connection between the left puncture shell, the right puncture shell and the straight tube part can be sealed by the sealing ring installed in the annular arc groove, thereby preventing debris from entering the inside of the puncture needle during the use of the puncture needle.

[0018] Furthermore, the outer side wall of the locking sleeve is provided with rounded corners.

[0019] By adopting the above technical solution, the rounded corners of the outer side wall of the locking sleeve can prevent the corners of the locking sleeve from scratching human organs when the puncture needle is used.

[0020] Furthermore, a plurality of arc grooves are arranged on the outer wall of the locking sleeve and around the axis of the straight tube portion.

[0021] By adopting the above technical solution and providing a plurality of arc-shaped grooves, slipping can be avoided during the rotation of the locking sleeve.

[0022] Furthermore, the end face of the protrusion is arranged in an arc shape, and the side wall thereof is in contact with the inner wall of the mounting hole.

[0023] By adopting the above technical solution, when the protrusion is installed into the mounting hole, the end face of the protrusion is arranged in an arc shape, which can play a guiding role in installing the protrusion into the mounting hole, and its side wall fits with the inner wall of the mounting hole, which can avoid shaking when the left puncture shell and the right puncture shell are closed and sleeved on the straight tube part.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] (1) By combining the left puncture shell and the right puncture shell and putting them on the straight tube part, and then firmly locking the left puncture shell and the right puncture shell together through the locking sleeve, the left puncture shell and the right puncture shell can be easily separated and cleaned;

[0026] (2) By providing a sealing strip and a sealing groove, the left puncture shell and the right puncture shell can be further limited, and the left puncture shell and the right puncture shell can be sealed on the fitting surface;

[0027] (3) By setting the rounded corners of the outer wall of the locking sleeve, the corners of the locking sleeve can be prevented from scratching human organs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0029] Figure 2 This is a schematic diagram of the explosion structure of this embodiment;

[0030] Figure 3 It is a partial cross-sectional schematic diagram of this embodiment;

[0031] Figure 4 Schematic diagram showing the left puncture shell and the right puncture shell of this embodiment.

[0032] Figure numerals: 1, straight tube portion; 2, conical puncture portion; 201, left puncture shell; 202, right puncture shell; 3, locking sleeve; 4, protrusion; 5, mounting hole; 6, arc groove; 7, annular arc groove; 8, sealing ring; 9, sealing groove; 10, sealing strip. DETAILED DESCRIPTION

[0033] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] A puncture needle, such as Figure 1 , 2As shown, it includes a straight tube portion 1 and a tapered puncture portion 2 made of a transparent material, the tapered puncture portion 2 includes a symmetrical left puncture shell 201 and a right puncture shell 202, the left puncture shell 201 and the right puncture shell 202 are connected together by a locking sleeve 3, the locking sleeve 3 is threadedly connected to the left puncture shell 201 and the right puncture shell 202 installed together, protrusions 4 extend from the left puncture shell 201 and the right puncture shell 202, and a mounting hole 5 that is clamped with the corresponding protrusion 4 is opened on the straight tube portion 1.

[0035] like Figure 1 , 2 As shown, in order to prevent the corners of the locking sleeve 3 from scratching human organs, the outer side wall of the locking sleeve 3 is rounded in this embodiment.

[0036] Furthermore, a plurality of arc grooves 6 are provided on the outer wall of the locking sleeve 3 and around the axis of the straight tube portion 1 , so as to prevent the locking sleeve 3 from slipping during rotation.

[0037] like Figure 3 As shown, the inner wall of the left puncture shell 201 and the right puncture shell 202 and the opening formed by the two are provided with an annular arc groove 7 surrounding the axis of the straight tube part 1, and a sealing ring 8 is installed in the annular arc groove 7 to fit the straight tube part 1. Therefore, when the left puncture shell 201 and the right puncture shell 202 are closed and sleeved on the straight tube part 1, the sealing ring 8 installed in the annular arc groove 7 can achieve sealing at the connection between the left puncture shell 201, the right puncture shell 202 and the straight tube part 1, so as to prevent foreign matter from entering the inside of the puncture needle during the use of the puncture needle.

[0038] It is worth mentioning that the end face of the protrusion 4 is arranged in an arc shape, and its side wall is in close contact with the inner wall of the mounting hole 5. Therefore, when the protrusion 4 is installed in the mounting hole 5, the end face of the protrusion 4 is arranged in an arc shape, which can play a guiding role in installing the protrusion 4 into the mounting hole 5, and its side wall is in close contact with the inner wall of the mounting hole 5, which can prevent the left puncture shell 201 and the right puncture shell 202 from shaking when they are closed and sleeved on the straight tube part 1.

[0039] like Figure 4 As shown, the surface where the left puncture shell 201 and the right puncture shell 202 are attached is provided with a sealing groove 9 extending along the long side direction of the surface, and a sealing strip 10 engaged with the sealing groove 9 is fixed on the right puncture shell 202. Therefore, when the left puncture shell 201 and the right puncture shell 202 are attached, the sealing strip 10 and the sealing groove 9 are engaged with each other, which can further limit the position of the left puncture shell 201 and the right puncture shell 202, and play a role in sealing the attached surface of the left puncture shell 201 and the right puncture shell 202.

[0040] Furthermore, in order to facilitate cleaning of the sealing groove 9 and prevent debris from remaining in the sealing groove 9, the corners of the sealing groove 9 in this embodiment are all rounded.

[0041] It is worth mentioning that in order to make the sealing strip 10 fit tightly with the sealing groove 9 and further strengthen the sealing effect between the sealing strip 10 and the sealing groove 9, the sealing strip 10 in this embodiment is made of non-toxic rubber material.

[0042] The working process and beneficial effects of the utility model are as follows: when the puncture needle needs to be cleaned, the locking sleeve 3 is rotated, and after the locking sleeve 3 is rotated to disengage from the left puncture shell 201 and the right puncture shell 202, the left puncture shell 201, the right puncture shell 202 and the straight tube portion 1 can be separated for cleaning; when the puncture needle needs to be installed, the protrusions 4 on the left puncture shell 201 and the right puncture shell 202 are first installed in the corresponding installation holes 5 on the straight tube portion 1, and then the locking sleeve 3 is sleeved on the left puncture shell 201 and the right puncture shell 202 and rotated to lock the left puncture shell 201 and the right puncture shell 202, so that the installation of the puncture needle can be achieved.

[0043] In summary, relative to the integrally formed conical puncture portion 2, the left puncture shell 201 and the right puncture shell 202 are combined and sleeved on the straight tube portion 1, and the left puncture shell 201 and the right puncture shell 202 installed together are firmly locked by the locking sleeve 3, so that the inside of the conical puncture portion 2 can be easily cleaned.

[0044] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A puncture needle, comprising a straight tube portion (1) and a tapered puncture portion (2) made of a transparent material, characterized in that: The conical puncture portion (2) comprises a symmetrical left puncture shell (201) and a right puncture shell (202); the left puncture shell (201) and the right puncture shell (202) are connected together via a locking sleeve (3); the locking sleeve (3) is threadedly connected to the left puncture shell (201) and the right puncture shell (202) installed together; protrusions (4) are provided in the left puncture shell (201) and the right puncture shell (202); and a mounting hole (5) is provided on the straight tube portion (1) and is engaged with the corresponding protrusion (4).

2. A puncture needle according to claim 1, characterized in that: The surfaces where the left puncture shell (201) and the right puncture shell (202) are in contact are provided with a sealing groove (9) extending along the long side direction of the surfaces, and the right puncture shell (202) is provided with a sealing strip (10) that is engaged with the sealing groove (9).

3. A puncture needle according to claim 2, characterized in that: The corners of the sealing groove (9) are all rounded.

4. A puncture needle according to claim 2, characterized in that: The sealing strip (10) is made of non-toxic rubber material.

5. A puncture needle according to claim 1, characterized in that: An annular arc groove (7) surrounding the axis of the straight tube portion (1) is provided on the inner walls of the left puncture shell (201) and the right puncture shell (202) and near the opening formed by the two. A sealing ring (8) is provided in the annular arc groove (7) and is in contact with the straight tube portion (1).

6. A puncture needle according to claim 1, characterized in that: The outer side wall of the locking sleeve (3) is provided with rounded corners.

7. A puncture needle according to claim 1, characterized in that: A plurality of arc-shaped grooves (6) are provided on the outer wall of the locking sleeve (3) and around the axis of the straight tube portion (1).

8. The puncture needle according to claim 1, characterized in that: The end surface of the protrusion (4) is arranged in an arc shape, and its side wall is in contact with the inner wall of the mounting hole (5).

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