A guide device for in-vitro securing a puncture assembly

Abstract

The application discloses a guide device for fixing a puncture assembly in vitro, which comprises at least two telescopic members, a first rod member and a second rod member which can be telescopically arranged in the first rod member; at least two first locking members which are arranged in a space surrounded by the telescopic members and are connected with the first rod member; a second locking member arranged at the top of the second rod member; a fitting member arranged at the bottom of the first rod member; and a puncture assembly comprising an argon arc knife which can move up and down in a sheath; the puncture assembly is inserted into the human body through the second locking member, the first locking member and the fitting member in sequence, and the first locking member and the second locking member respectively limit the sheath and the argon arc knife in the circumferential direction through a limiting member; the first locking member and the second locking member are used for respectively limiting the sheath and the argon arc knife on the first rod member and the second rod member, so that when the sheath is inserted into the human body, the sheath will not shake due to the patient's breathing, and the puncture depth and precision of the argon arc knife are high.

Description

TECHNICAL FIELD

[0001] The present application relates to a guiding device, in particular to a guiding device for fixing a puncture assembly outside the body. BACKGROUND

[0002] Pulmonary biopsy, namely percutaneous lung biopsy, is used for the diagnosis and differential diagnosis of lung peripheral lesions or diffuse lung lesions. Current pulmonary biopsy procedures include CT-guided lung puncture biopsy and thoracoscope-guided lung biopsy.

[0003] In the invention patent with the patent application number CN201920279864.X: a device for establishing a CT-guided ultra-low temperature frozen lung internal sealed negative pressure tunnel, an argon-helium knife movable in a sheath tube is used for lung puncture biopsy in CT-guided lung puncture biopsy, but in actual operation, it is found that: during CT scanning, since the sheath tube has no fixation at its body outside end, and lung puncture is often disturbed by respiration, which may cause the sheath tube to shake left and right in the body outside, so that the puncture angle and depth of the argon-helium knife to the human body often change, resulting in inaccurate puncture, which brings many adverse effects to lung puncture. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provides a guiding device for fixing a puncture assembly outside the body, which has a simple structure, and first and second locking members limit the sheath tube and the argon arc knife in the first and second rod members respectively, so that the sheath tube will not shake due to the patient's respiration, and the depth and accuracy of the argon arc knife puncture are high.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: a guiding device for fixing a puncture assembly outside the body, comprising:

[0006] At least two telescopic members, the telescopic member comprising a first rod member and a second rod member telescopic in the first rod member;

[0007] At least two first locking members, the first locking member being arranged in the space surrounded by the telescopic member, and the first locking member being connected with the first rod member;

[0008] A second locking member is arranged at the top of the second rod member;

[0009] A fitting member is arranged at the bottom of the first rod member; and

[0010] A puncture assembly, the puncture assembly comprising an argon arc knife movable up and down in a sheath tube;

[0011] The puncture assembly is inserted into the human body in sequence through the second locking buckle, the first locking buckle and the fitting part, and the first locking buckle and the second locking buckle respectively limit the sheath tube and the argon knife in the circumferential direction through the limiting part.

[0012] Further, the first locking buckle and the second locking buckle are both disc-shaped, and a circular through hole is formed in the first locking buckle and the second locking buckle.

[0013] Further, the fitting part is disc-shaped, and a through port for the puncture assembly to pass through is formed in the fitting part, and a plurality of elastic parts are arranged in the circumferential direction of the fitting part.

[0014] Further, the first locking buckle, the second locking buckle and the fitting part have notches on the same extension line for the puncture assembly to pass through.

[0015] Further, the number of the limiting parts is multiple, and the multiple limiting parts are arranged in the circumferential direction of the first locking buckle and the second locking buckle.

[0016] Further, the limiting part is a screw with a cross groove.

[0017] Due to the use of the above technical scheme, the present application has the following advantages compared with the prior art:

[0018] The guiding device for fixing the puncture assembly outside the body has a simple overall structure and is convenient to operate. The first locking buckle and the second locking buckle are used to respectively fix the sheath tube and the argon knife on the first rod and the second rod. When the sheath tube is inserted into the human body, the sheath tube will not shake due to the patient's breathing. The puncture depth and precision of the argon knife are high. The argon knife will not be misoperated due to the movement of the sheath tube. The adverse factors during lung puncture are avoided, and the safety of the patient during lung puncture is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] The technical scheme of the present application will be further described below in combination with the drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present application.

[0021] Among them: telescopic part 1, first locking buckle 2, second locking buckle 3, fitting part 4, puncture assembly 5, limiting part 6, first rod 10, second rod 11, circular through hole 20, through port 40, elastic part 41, sheath tube 50, argon helium knife 51, notch 60. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0023] The design idea of the present application is as follows: after the puncture assembly 5 is punctured into the human body, the first locking piece 2 and the second locking piece 3 limit the sheath tube 50 and the argon-helium knife 51 in the puncture assembly 5 on the first rod 10 and the second rod 11 in the telescopic piece 1 respectively, so that the position of the sheath tube 50 can be fixed, the displacement of the argon-helium knife 51 caused by the breathing of the patient during puncture can be avoided, and the angle and depth of the puncture of the argon-helium knife 51 are accurate; at the same time, the sheath tube 50 will not move the argon-helium knife 51 when moving downward, and misoperation is avoided.

[0024] Referring to Figure 1 The present application is an embodiment of a guide device for an external fixed puncture assembly, which comprises a telescopic piece 1, a first locking piece 2, a second locking piece 3, a fitting piece 4 and a puncture assembly 5; the puncture assembly 5 comprises an argon-helium knife 51 which can move up and down in a sheath tube 50.

[0025] In the embodiment, the number of telescopic pieces 1 is two, and the two telescopic pieces 1 are arranged in parallel relative to each other; the telescopic piece 1 comprises a first rod 10, and a second rod 11 which can move up and down in the first rod 10 is arranged at the top of the first rod 10.

[0026] In the embodiment, two first locking pieces 2 are included, and the number is not limited to this, and can also be three or four; two first locking pieces 2 can ensure that the sheath tube 50 is in a straight line state; the first locking piece 2 is in the form of a disc, and a circular through hole 20 through which the sheath tube 50 passes is formed in the first locking piece 2.

[0027] Three limiting pieces 6 are arranged in the circumferential direction of the first locking piece 2; the limiting piece 6 in the embodiment is a long rod screw with a cross groove, and the limiting piece 6 is threadedly connected with the first locking piece 2; after the limiting piece 6 is screwed with the first locking piece 2, the end of the limiting piece 6 is used to limit the circumferential direction of the sheath tube 50, so that the sheath tube 50 can only move up and down in the first locking piece 2, and cannot shake left and right; in actual installation, the two ends of the two locking pieces 2 are respectively fixedly connected with the two first rods 10, thereby forming a whole for fixing the sheath tube 50.

[0028] The second locking piece 3 is arranged at the top of the two second rods 11; the second locking piece 3 is in the form of a disc like the first locking piece 2, and three limiting pieces are arranged in the circumferential direction of the second locking piece 22; the three limiting pieces are used to limit the circumferential direction of the argon-helium knife 51 on the two second rods 11; in addition, a circular through hole 20 through which the sheath tube 50 passes is also formed in the second locking piece 3.

[0029] The fitting piece 4 is installed at the bottom of the first rod piece 10, and the fitting piece 4 is also disc-shaped, and a through hole 40 for the sheath 50 to pass through is formed in the fitting piece 4, because the fitting piece 4 is directly in contact with the human body skin, in order to ensure that the fitting is more stable, therefore, four elastic pieces 41 are additionally arranged on the circumferential edge of the fitting piece 4, and the elastic piece 41 can be a spring piece or a steel wire ring, so that when the human body skin is not smooth, the elastic piece 41 can better contact the human body skin with the present application, and further ensure the accuracy of the argon arc knife puncture.

[0030] In addition, the first locking piece 2, the second locking piece 3 and the fitting piece 4 have a notch 60 located on the same vertical extension line, so that the puncture assembly 5 can be conveniently taken out of the present application, which is convenient and labor-saving.

[0031] The working process is as follows: first, the sheath with the argon arc knife is put into the first locking piece, the second locking piece and the fitting piece through the notch, and then the sheath is circumferentially limited in the two first locking pieces by the limiting piece, and the argon arc knife is circumferentially limited in the second locking piece.

[0032] When operating, the sheath is inserted into the human body, at this time, the elastic piece is tightly attached to the outer skin of the human body, which ensures that the fitting piece can be in close contact with the outer skin of the human body, and then the argon arc knife is manually moved downward for puncture operation, and when the argon arc knife moves downward, the second rod piece also synchronously moves downward in the first rod piece, because the inside of the sheath is fixed by the ice ball, and the outside is fixed by the first locking piece, so that the sheath will not move in position due to the patient's breathing, and the depth and position of the argon arc knife when moving downward for puncture can ensure accuracy.

[0033] In addition, sometimes it is necessary to move the sheath downward, and the argon arc knife is fixed in the upper position of the second rod piece by the second locking piece, so that the sheath moving will not move the argon arc knife downward, avoiding misoperation.

[0034] The present application is a guide device for an external fixation puncture assembly, which has a simple overall structure and is convenient to operate, and the sheath and the argon arc knife are respectively fixed on the first rod piece and the second rod piece by the first locking piece and the second locking piece, so that when the sheath is inserted into the human body, the sheath will not shake due to the patient's breathing, the puncture depth and accuracy of the argon arc knife are high, and at the same time, the argon arc knife will not be misoperated due to the movement of the sheath, and will not produce adverse factors in lung puncture, ensuring the safety of the patient in lung puncture.

[0035] The above is only a specific application example of the present application, and does not constitute any limitation on the protection scope of the present application. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the present application.

Claims

1. A guide device for in-vitro securing a puncture assembly, characterized in that, The utility model relates to a puncture device, which comprises: at least two telescopic members (1), each comprising a first rod member (10) and a second rod member (11) telescopically movable within the first rod member (10); at least two first locking members (2) arranged in the space surrounded by the telescopic members (1) and connected to the first rod member (10); a second locking member (3) arranged at the top of the second rod member (11); a fitting member (4) arranged at the bottom of the first rod member (10); and a puncture assembly (5) comprising an argon knife (51) movable up and down within a sheath (50); wherein the puncture assembly (5) is inserted into the human body after sequentially passing through the second locking member (3), the first locking member (2) and the fitting member (4), the first locking member (2) and the second locking member (3) respectively limit the sheath (50) and the argon knife (51) in the circumferential direction by a limiting member (6), and the second rod member (11) moves downward synchronously with the first rod member (10) when the argon knife (51) moves downward; the fitting member (4) is disc-shaped, and a through hole (40) for the puncture assembly (5) to pass through is formed in the fitting member (4), a plurality of elastic members (41) are arranged in the circumferential direction of the fitting member (4), and the elastic members (41) are spring sheets or wire coils; the first locking member (2) and the second locking member (3) are both disc-shaped, and a circular through hole (20) is formed in the first locking member (2) and the second locking member (3); the first locking member (2), the second locking member (3) and the fitting member (4) have notches (60) on the same extension line for the puncture assembly (5) to pass through. The number of the limiting members (6) is plural, and the limiting members (6) are arranged in the circumferential direction of the first locking member (2) and the second locking member (3).

2. The guide for an externally fixed puncture assembly according to claim 1, characterized in that: The limiting member (6) is a screw with a cross slot.

3. The guide for an externally fixed puncture assembly of claim 1, wherein: ​

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