CN219147820U

CN219147820U - Puncture positioning device under CT guide

Info

Publication number: CN219147820U
Application number: CN202223523802.XU
Authority: CN
Inventors: 何龙光; 李彩霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-09
Anticipated expiration: 2032-12-26

Abstract

The utility model relates to a puncture positioning device under CT guidance, which comprises a base structure, a calibration structure, a puncture guiding structure and a fixing structure capable of being fixed on a bed frame; the calibration structure is in sliding connection with the base structure, and the fixed structure is in rotatable connection with the base structure; the puncture guiding structure comprises an angle dial, a fourth rod sleeve, a puncture guide rod and a fixing rod for fixing a puncture needle, wherein the angle dial is in sliding connection with the base structure, the fourth rod sleeve is in rotatable connection with the angle dial, the puncture guide rod is in sleeve joint with the fourth rod sleeve, and the fixing rod is in sliding connection with the puncture guide rod; the puncture needle is penetrated by sliding the telescopic fixed rod through moving the angle scale on the base structure and rotating the fourth rod sleeve to position the puncture position. Simultaneously, through calibration structure location level and vertical position, can conveniently be fixed in the bedstead railing through fixed knot constructs, have the location accuracy, convenient to use, portable's technical effect.

Description

Puncture positioning device under CT guide

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a puncture positioning device under CT guidance.

Background

With the continuous development of medical technology, many diseases can be diagnosed and treated by a minimally invasive operation through CT guided percutaneous puncture without surgical incision. Especially, pathological analysis of tumor diseases is important, and a definite pathological diagnosis is required to be obtained before treatment, so that a treatment scheme is formulated. Therefore, for the tumor in the body cavity, the tumor is thoroughly treated by percutaneous puncture biopsy or implantation of an argon helium superconducting targeting surgical system, namely an argon helium knife under CT positioning and guiding. In the past, the puncture person can only rely on CT scanning to confirm the depth and the angle of puncture point to treat tumor or take biopsy in the body cavity through percutaneous puncture, and the depth and the angle of needle penetration are subjectively confirmed, and the accuracy is relatively poor, and the influence of body position change when receiving patient's physical activity in the puncture process often appears puncture error, need puncture repeatedly, causes tumor local implantation to shift to appear serious complications such as pneumothorax, visceral organ hemorrhage.

For example, in chinese patent, CN111658095a is an auxiliary positioning system for puncturing cervical intervertebral disc under CT guidance, which adopts an arc-shaped disc and two bases hinged to the arc-shaped disc respectively, the arc-shaped disc is provided with a pointer which can move along the arc-shaped disc and is perpendicular to the tangent plane of the arc-shaped disc, and the bases comprise a fixing device and a height adjusting device, so as to realize auxiliary positioning for puncturing cervical intervertebral disc under CT guidance.

However, the existing technical scheme still has the problems that the CT guided percutaneous puncture stereotactic frame has inaccurate positioning during puncture, is easy to damage normal tissues around a focus and has poor puncture effect.

Disclosure of Invention

The utility model aims at solving the technical problems of inaccurate positioning, difficult carrying and complex structure in the prior art and providing a puncture device convenient to position.

In order to achieve the above purpose, the utility model adopts the following specific technical scheme:

the utility model relates to a puncture positioning device under CT guidance, which comprises a basal body structure capable of measuring moving distance, a calibration structure for positioning horizontal and vertical directions, a puncture guiding structure for positioning puncture positions and a fixing structure capable of being fixed on a bed frame; the calibration structure is in sliding connection with the base structure, and the fixed structure is in rotatable connection with the base structure; the puncture guiding structure comprises an angle dial, a fourth rod sleeve, a puncture guide rod and a fixing rod for fixing a puncture needle, wherein the angle dial is in sliding connection with the base structure, the fourth rod sleeve is in rotatable connection with the angle dial, the puncture guide rod is in sleeve joint with the fourth rod sleeve, and the fixing rod is in sliding connection with the puncture guide rod; the puncture needle is penetrated by sliding the telescopic fixed rod through moving the angle scale on the base structure and rotating the fourth rod sleeve to position the puncture position.

Preferably, the base structure is provided as a plate-like structure.

Preferably, the base structure is a ruler provided with scale marks.

Preferably, the calibration structure comprises a sliding sleeve sleeved with the base structure, a horizontal positioning rod detachably connected with the sliding sleeve, and a vertical positioning rod foldably connected with the horizontal positioning rod.

Preferably, a first rod sleeve is arranged on the sliding sleeve, and the horizontal positioning rod is sleeved with the first rod sleeve; the horizontal positioning rod and the vertical positioning rod are respectively sleeved with a second rod sleeve and a third rod sleeve, and the second rod sleeve is rotatably connected with the third rod sleeve so as to realize foldable connection of the vertical positioning rod and the horizontal positioning rod.

Preferably, the second rod sleeve is provided with a half ring groove, the third rod sleeve is provided with a limiting rod, and the limiting rod is embedded into the half ring groove and can slide along the half ring groove.

Preferably, the two end parts of the half ring groove are both provided with magnetic parts, and the limiting rod is provided with a metal rod which can be acted by a magnetic field.

Preferably, the second rod sleeve is provided with a clamping groove, the third rod sleeve is provided with a semicircular clamping block, and the clamping block is in clamping fit with the clamping groove.

Preferably, a fourth rod sleeve is rotatably arranged on the angle disc, and the fourth rod sleeve is sleeved with the puncture guide rod.

Preferably, the end of the fixing rod is provided with a clamping structure for clamping the puncture needle.

Preferably, the fixing structure comprises a connecting piece and a clamping hoop structure; the base structure is provided with a rotating shaft, and the rotating shaft is rotatably connected with the connecting piece.

Preferably, the connecting piece is provided with a shaft hole, and a ring body is arranged in the shaft hole; the rotating shaft is provided with a ring groove; the rotating shaft is sleeved with the shaft hole, and the annular groove is connected with the ring body in a jogged manner; the diameter of the shaft hole exceeds the diameter of the rotating shaft, a fastening piece is arranged between the rotating shaft and the shaft hole, and the main body of the fastening piece is in a shape that one end is a narrow end, the other end is a wide end and gradually changes from the narrow end to the wide end.

Preferably, the narrow end of the fastening piece is connected with a first end piece, the wide end of the fastening piece is connected with a second end piece, the connecting piece is provided with a first accommodating groove corresponding to the first end piece, and the connecting piece is provided with a second accommodating groove corresponding to the second end piece; a torsion spring is fixedly arranged in the first accommodating groove and connected with the first end piece; the second end piece is connected with the pull button, and the pull button is connected with the connecting piece in a sliding way.

Preferably, the clip structure comprises a two-piece semi-annular clip member hinged to the connector member.

Preferably, the inner side of the hoop is provided with a non-slip gasket.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses a puncture positioning device under CT guidance, which comprises a base structure, a calibration structure, a puncture guiding structure and a fixing structure capable of being fixed on a bed frame; the puncture guiding structure comprises an angle dial, a fourth rod sleeve, a puncture guide rod and a fixing rod, the angle dial is moved on the base body structure, the fourth rod sleeve is rotated to position the puncture position, and the puncture needle is punctured by sliding the telescopic fixing rod. Simultaneously, through calibration structure location level and vertical position, can conveniently be fixed in the bedstead railing through fixed knot constructs, have the location accuracy, convenient to use, portable's technical effect.

On this basis, the calibration structure includes the sliding sleeve that cup joints with the base member structure, with the horizontal locating lever of sliding sleeve detachable connection, with the vertical locating lever of horizontal locating lever collapsible connection. The horizontal positioning rod and the vertical positioning rod are foldable when not in use, so that the storage is convenient.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic exploded view of a puncture positioning device according to a preferred embodiment of the present utility model.

Fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.

Fig. 3 is an exploded view of the puncture positioning device according to another view angle in the preferred embodiment of the present utility model.

Fig. 4 is a schematic view of a partial enlarged structure at B in fig. 3.

Fig. 5 is a schematic view of a partial enlarged structure at C in fig. 3.

Fig. 6 is a schematic view of a partial enlarged structure at F in fig. 3.

FIG. 7 is a schematic view showing the structure of the puncture positioning apparatus according to the preferred embodiment of the present utility model.

Fig. 8 is a schematic view showing the structure of a fastening tab in the preferred embodiment of the present utility model.

Reference numerals illustrate:

the device comprises a ruler 10, a first sliding rail 11, a rotating shaft 12, a ring groove 13, a first sliding sleeve 20, a first rod sleeve 21, a horizontal positioning rod 22, a second rod sleeve 23, a third rod sleeve 24, a vertical positioning rod 25, a half ring groove 26, a limiting rod 27, a clamping groove 28, a clamping block 29, a 30 angle disc, a fourth rod sleeve 31, a puncture guide rod 32, a fixing rod 33, a second sliding rail 34, a second sliding sleeve 35, a clamping structure 36, a clamping arm 37, a threaded hole 38, a bolt 41, a 50 connecting piece 51, a shaft hole 52, a ring body 53, a first containing groove 54, a second containing groove 55, a third sliding rail 55, a pull button 56, a clamping structure 60, a 61 clamping piece 62, a non-slip pad 70 fastening piece 71, a first end piece 72 and a second end piece 72.

Detailed Description

The present utility model is further illustrated and described in the following detailed description, which should be understood as being for the purpose of making the technical solution of the present utility model clearer and easier to understand, and not limiting the scope of the claims.

The utility model relates to a puncture positioning device under CT guidance, which comprises a basal body structure capable of measuring moving distance, a calibration structure for positioning horizontal and vertical directions, a puncture guiding structure for positioning puncture positions and a fixing structure capable of being fixed on a bed frame; the calibration structure is in sliding connection with the base structure, and the fixed structure is in rotatable connection with the base structure; as shown in fig. 1, the puncture guiding structure comprises an angle disc 30, a fourth rod sleeve 31, a puncture guiding rod 32 and a fixing rod 33 for fixing the puncture needle, wherein the angle disc 30 is slidably connected with the base structure, the fourth rod sleeve 31 is rotatably connected with the angle disc 30, the puncture guiding rod 32 is sleeved with the fourth rod sleeve 31, and the fixing rod 33 is slidably connected with the puncture guiding rod 32; the puncture needle is completed by moving the angle dial 30 on the base structure and rotating the fourth bar sleeve 31 to position the puncture site and by sliding the telescopic fixed bar 33.

In a preferred embodiment, the base structure is provided as a plate-like structure.

In a preferred embodiment, the base structure is a ruler 10 provided with graduation marks.

In a preferred embodiment, the alignment structure includes a sliding sleeve sleeved with the base structure, a horizontal positioning rod 22 detachably connected with the sliding sleeve, and a vertical positioning rod 25 foldably connected with the horizontal positioning rod 22.

In a preferred embodiment, as shown in fig. 2, a first rod sleeve 21 is arranged on the sliding sleeve, and the horizontal positioning rod 22 is sleeved with the first rod sleeve 21; the horizontal positioning rod 22 and the vertical positioning rod 25 are respectively sleeved with a second rod sleeve 23 and a third rod sleeve 24, and the second rod sleeve 23 is rotatably connected with the third rod sleeve 24 so as to realize foldable connection of the vertical positioning rod 25 and the horizontal positioning rod 22.

In a preferred embodiment, the second rod sleeve 23 is provided with a half-ring groove 26, the third rod sleeve 24 is provided with a limiting rod 27, and the limiting rod 27 is embedded in the half-ring groove 26 and can slide along the half-ring groove 26.

In a preferred embodiment, both end portions of the half ring groove 26 are provided as magnetic parts, and the limit rod 27 is provided as a metal rod capable of being acted by a magnetic field.

In a preferred embodiment, the second rod sleeve 23 is provided with a clamping groove 28, and the third rod sleeve 24 is provided with a semicircular clamping block 29, and the clamping block 29 can be in clamping fit with the clamping groove 28.

In a preferred embodiment, a fourth rod sleeve 31 is rotatably arranged on the angle disc 30, and the fourth rod sleeve 31 is sleeved with a puncture guide rod 32.

In a preferred embodiment, the end of the fixing rod 33 is provided with a holding structure 36 for holding the puncture needle.

In a preferred embodiment, as shown in FIG. 3, the securing structure includes a connector 50, and a clip structure 60; the base structure is provided with a rotating shaft 12, and the rotating shaft 12 is rotatably connected with the connecting piece 50.

In a preferred embodiment, the connecting piece 50 is provided with a shaft hole 51, and a ring body 52 is arranged in the shaft hole 51;

the rotating shaft 12 is provided with a ring groove 13;

the rotating shaft 12 is sleeved with the shaft hole 51, and the ring groove 13 is connected with the ring body 52 in a jogged manner;

the diameter of the shaft hole 51 exceeds the diameter of the rotating shaft 12, a fastening piece 70 is arranged between the rotating shaft 12 and the shaft hole 51, and the main body of the fastening piece 70 is in a shape that one end is a narrow end, the other end is a wide end, and the narrow end is gradually changed from the narrow end to the wide end.

In a preferred embodiment, the fastening tab 70 has a first end tab 71 attached to a narrow end thereof and a second end tab 72 attached to a wide end thereof, and the connector 50 has a first receiving groove 53 corresponding to the first end tab 71 and a second receiving groove 54 corresponding to the second end tab 72;

a torsion spring is fixedly arranged in the first accommodating groove 53 and is connected with the first end piece 71;

the second end piece 72 is connected to the pull button 56, and the pull button 56 is slidably connected to the connecting member 50.

In a preferred embodiment, the clip structure 60 includes a two-piece semi-annular clip member 61, the clip member 61 being hinged to the connector 50.

In a preferred embodiment, the collar 61 is provided on the inside with a non-slip spacer 62.

The utility model is further illustrated by the following examples.

Examples

The embodiment discloses a puncture positioning device under CT guidance, which comprises a ruler 10, a first sliding sleeve 20 and an angle scale 30.

The first sliding sleeve 20 is slidably connected with the ruler 10, and the sliding distance of the first sliding sleeve 20 is marked by recording scales on the ruler 10.

The first sliding sleeve 20 is provided with a first rod sleeve 21, the first rod sleeve 21 is sleeved with a horizontal positioning rod 22, the horizontal positioning rod 22 is sleeved with a second rod sleeve 23, the second rod sleeve 23 is rotatably connected with a third rod sleeve 24 through a rotating shaft 12, and the third rod sleeve 24 is sleeved with a vertical positioning rod 25.

As shown in fig. 5, in order to ensure that the horizontal positioning rod 22 and the vertical positioning are in a vertically crossed state, a semi-annular groove 26 is formed on the second rod sleeve 23, and a limiting rod 27 is formed on the third rod sleeve 24.

Specifically, both end portions of the half ring groove 26 are provided as magnetic portions. The stop lever 27 is arranged as a metal lever, such as an iron lever, which is capable of being acted upon by a magnetic field.

Specifically, the second sleeve 23 is provided with a clamping groove 28, and the third sleeve 24 is provided with a semicircular clamping block 29. When not in use, the vertical positioning rod 25 can be folded, and the fixing position can be achieved through the cooperation of the clamping groove 28 and the clamping block 29.

The ruler 10 is provided with a first sliding rail 11, and the angle scale 30 is slidably connected with the first sliding rail 11. The distance the angle dial 30 slides is marked by registering the scale on the ruler 10.

The angle disc 30 is rotatably provided with a fourth rod sleeve 31, the fourth rod sleeve 31 is sleeved with a puncture guide rod 32, and the puncture guide rod 32 is used for guiding and positioning the puncture angle and the puncture position of the puncture needle.

The puncture guide rod 32 is slidably connected with a fixing rod 33, and the fixing rod 33 is used for fixing the puncture needle. Is slidably connected with the puncture guide rod 32 through a fixed rod 33 for fine adjustment of the telescopic distance of puncture.

Specifically, the puncture guide rod 32 is provided with a second sliding rail 34, and the fixing rod 33 is provided with a second sliding sleeve 35. The second sliding sleeve 35 is slidably engaged with the second sliding rail 34.

Specifically, the end of the fixing rod 33 is provided with a clamping structure 36 for clamping the puncture needle.

Specifically, as shown in fig. 4, the clamping structure 36 includes a clamping arm 37, and a threaded hole 38 is formed in the clamping arm 37. After the holding arm 37 holds the puncture needle, the bolt 41 is screwed into the threaded hole 38 to strengthen the position fixation of the puncture needle.

Specifically, the bolt 41 at the clamping arm 37 is provided with a soft anti-slip pad at the end, which plays a role of buffering and anti-slip, and better fixes the puncture needle.

Specifically, the angle plate 30 is provided with a slider. The slide cooperates with the first slide rail 11 to achieve a slidable connection of the angle disc 30.

In order to play a role in fixing, fastening structures are arranged on the first rod sleeve 21, the second rod sleeve 23, the third rod sleeve 24 and the fourth rod sleeve 31.

Specifically, the fastening structure includes a bolt 41 hole 40 provided on the rod sleeve, and a bolt 41 fitted with the bolt 41 hole 40. The bolt 41 is tightened to fix the rod-shaped member in engagement with the rod sleeve.

One end of the ruler 10 is provided with a rotating shaft 12. The angle of the whole ruler 10 is adjusted by rotating the ruler, so that the angle suitable for puncture is adjusted.

The rotary shaft 12 is rotatably connected with a fixed structure, the fixed structure comprises a connecting piece 50 and a clamp structure 60, the rotary shaft 12 is rotatably connected with the connecting piece 50, the connecting piece 50 is provided with a shaft hole 51, a ring body 52 is arranged in the shaft hole 51, a ring groove 13 is arranged on the rotary shaft 12, the rotary shaft 12 is sleeved with the shaft hole 51, and the ring groove 13 is connected with the ring body 52 in a jogged manner.

The diameter of the shaft hole 51 exceeds the diameter of the rotating shaft 12, and as shown in fig. 8, a fastening piece 70 is provided between the rotating shaft 12 and the shaft hole 51. The fastening tab 70 is used to control the rotational state of the shaft 12, i.e., to control the rotational or non-rotational state.

The body of the fastening tab 70 has a shape in which one end is a narrow end and the other end is a wide end, and gradually changes from the narrow end to the wide end. The fastening tab 70 is constructed of a deformable, flexible material.

When the narrower portion of the fastening piece 70 is filled between the rotation shaft 12 and the shaft hole 51, the rotation shaft 12 is in a rotatable state.

When the wider portion of the fastening piece 70 is filled between the rotation shaft 12 and the shaft hole 51, the rotation shaft 12 is in a state in which no rotation occurs.

Specifically, the fastening tab 70 has a first end tab 71 attached to the narrow end and a second end tab 72 attached to the wide end.

The connection member 50 is provided with a first receiving groove 53 corresponding to the first end piece 71 and a second receiving groove 54 corresponding to the second end piece 72.

A torsion spring is fixedly disposed in the first accommodating groove 53, and the torsion spring is connected with the first end piece 71. The first end piece 71 is pulled by the torsion spring so that the wider portion of the fastening piece 70 is filled into the gap between the shaft hole 51 and the rotation shaft 12 to prevent the rotation shaft 12 from rotating at random.

The second end piece 72 is connected to the pull button 56, and in particular, may be connected by a string. The pull button 56 is slidably coupled to the connector 50. By pulling the pull button 56, the second end piece 72 is pulled to drive the main body of the fastening piece 70 to move towards the second end piece 72, so that the narrower part of the fastening piece 70 is filled into the gap, and at this time, the rotating shaft 12 can rotate to adjust the angle.

Specifically, as shown in fig. 6, the connecting member 50 is provided with a third slide rail 55, and the pull button 56 is slidably connected to the third slide rail 55.

Specifically, the clip structure 60 includes a two-piece semi-annular clip member 61. The collar 61 is hinged to the connector 50.

Specifically, as shown in fig. 7, the inside of the hoop member 61 is provided with a slip-preventing pad 62, and the clip structure 60 is used to be fixed to the bed bar of the bed frame.

The implementation mode is as follows:

the two-piece hoop 61 is engaged with the bed pole, and the bolt 41 is tightened to fix the hoop 61. Pulling the pull button 56 enables the rotating shaft 12 to rotate freely, and the rotating angle of the rotating shaft 12 is adjusted. The vertical positioning rod 25 is unfolded so that the vertical positioning rod 25 and the horizontal positioning rod 22 are in a mutually perpendicular state to adjust the horizontal and vertical directions. The first slide 20 is slid to adjust the sliding distance of the vertical 25 and horizontal 22 positioning rods on the ruler 10, which is adjusted to fit the alignment reference. The angle dial 30 is slid to adjust the proper penetration height. The fourth bar sleeve 31 is turned to adjust the proper penetration angle. The fixing rod 33 is retracted to advance the puncture needle to complete the puncture.

The present utility model is illustrated by way of example and not limitation, and other variations to the disclosed embodiments, as would be readily apparent to one skilled in the art, are intended to be within the scope of the utility model as defined in the claims.

Claims

1. A puncture positioning device under CT guidance, which is characterized in that:

comprises a basal body structure capable of measuring the moving distance, a calibration structure for positioning the horizontal and vertical directions, a puncture guiding structure for positioning the puncture position and a fixing structure capable of being fixed on a bed frame;

the calibration structure is in sliding connection with the base structure, and the fixed structure is in rotatable connection with the base structure;

the puncture guiding structure comprises an angle dial (30), a fourth rod sleeve (31), a puncture guide rod (32) and a fixing rod (33) for fixing a puncture needle, wherein the angle dial (30) is slidably connected with the base structure, the fourth rod sleeve (31) is rotatably connected with the angle dial (30), the puncture guide rod (32) is sleeved with the fourth rod sleeve (31), and the fixing rod (33) is slidably connected with the puncture guide rod (32); the puncture needle is pierced by moving the angle disc (30) on the base structure and rotating the fourth rod sleeve (31) to position the puncture position and by sliding the telescopic fixed rod (33).

2. The CT-guided puncture positioning device according to claim 1, wherein:

the base structure is provided as a plate-like structure.

3. The CT-guided puncture positioning device according to claim 1, wherein:

the calibration structure comprises a sliding sleeve sleeved with the base structure, a horizontal positioning rod (22) detachably connected with the sliding sleeve, and a vertical positioning rod (25) foldably connected with the horizontal positioning rod (22);

the sliding sleeve is provided with a first rod sleeve (21), and the horizontal positioning rod (22) is sleeved with the first rod sleeve (21); the horizontal positioning rod (22) and the vertical positioning rod (25) are respectively sleeved with a second rod sleeve (23) and a third rod sleeve (24), and the second rod sleeve (23) and the third rod sleeve (24) are rotatably connected so as to realize foldable connection of the vertical positioning rod (25) and the horizontal positioning rod (22).

4. A CT-guided puncture positioning device according to claim 3, characterized in that:

the second rod sleeve (23) is provided with a half ring groove (26), the third rod sleeve (24) is provided with a limiting rod (27), and the limiting rod (27) is embedded into the half ring groove (26) and can slide along the half ring groove (26).

5. The CT-guided puncture positioning device according to claim 1, wherein:

the angle disc (30) is rotatably provided with a fourth rod sleeve (31), and the fourth rod sleeve (31) is sleeved with the puncture guide rod (32).

6. The CT-guided puncture positioning device according to claim 1, wherein:

the end part of the fixed rod (33) is provided with a clamping structure (36) for clamping the puncture needle.

7. The CT-guided puncture positioning device according to claim 1, wherein:

the fixing structure comprises a connecting piece (50) and a clamp structure (60); the base structure is provided with a rotating shaft (12), and the rotating shaft (12) is rotatably connected with the connecting piece (50).

8. The CT-guided puncture positioning device of claim 7, wherein:

the connecting piece (50) is provided with a shaft hole (51), and a ring body (52) is arranged in the shaft hole (51); the rotating shaft (12) is provided with a ring groove (13); the rotating shaft (12) is sleeved with the shaft hole (51), and the annular groove (13) is connected with the ring body (52) in a jogged mode; the diameter of the shaft hole (51) exceeds the diameter of the rotating shaft (12), a fastening piece (70) is arranged between the rotating shaft (12) and the shaft hole (51), and the main body of the fastening piece (70) is in a shape that one end is a narrow end, the other end is a wide end and gradually changes from the narrow end to the wide end.

9. The CT-guided puncture positioning device of claim 8, wherein:

the narrow end of the fastening piece (70) is connected with a first end piece (71), the wide end of the fastening piece is connected with a second end piece (72), the connecting piece (50) is provided with a first accommodating groove (53) corresponding to the first end piece (71), and a second accommodating groove (54) corresponding to the second end piece (72); a torsion spring is fixedly arranged in the first accommodating groove (53), and the torsion spring is connected with the first end piece (71); the second end piece (72) is connected with the pull button (56), and the pull button (56) is slidably connected with the connecting piece (50).

10. The CT-guided puncture positioning device of claim 7, wherein:

the clip structure (60) comprises a two-piece semi-annular clip member (61), the clip member (61) being hinged to the connecting member (50).