WO2022016902A1

WO2022016902A1 - Angle-adjustable puncture template

Info

Publication number: WO2022016902A1
Application number: PCT/CN2021/084413
Authority: WO
Inventors: 王海峰; 张星光; 罗中宝
Original assignee: 上海睿刀医疗科技有限公司
Priority date: 2020-07-22
Filing date: 2021-03-31
Publication date: 2022-01-27
Also published as: CN111658097B; CN111658097A

Abstract

An angle-adjustable puncture template, comprising a template main body (101) and one or more guide wheels (102). The guide wheels (102) are rotatably arranged in the template main body (101); first guide holes (111) for a puncture needle to pass through are provided in the guide wheels (102); and the axis directions of the first guide holes (111) change as the guide wheels (102) rotate. The puncture template is provided with the guide wheels (102), such that the puncture template can meet puncture requirements of different angles, thereby improving the efficiency and the puncture precision of minimally invasive therapies such as puncture ablation and seed implantation are improved.

Description

An angle-adjustable puncture template

technical field

The invention relates to the technical field of medical instruments, in particular to a puncture template with an adjustable angle.

Background technique

Cancer is a major disease endangering human health. Traditional cancer treatment methods and newly developed thermal ablation therapy featuring minimally invasive ablation, as well as ablation therapy such as particle implantation, are limited by indications, contraindications, treatment side effects, thermal effects and other factors, making their clinical application subject to certain limitations. In recent years, with the continuous development of pulsed bioelectricity, electric field pulses have received extensive attention for their non-thermal and minimally invasive biomedical effects, and have been gradually applied in the clinical treatment of tumors.

The above-mentioned minimally invasive therapy often requires a puncture needle to reach the lesion area in the human body for treatment, and the puncture needle usually needs to be positioned with the puncture template under the guidance of ultrasound or other medical imaging equipment, so as to reach the expected target position. The structure of the traditional manual puncture template 1000 is shown in FIG. 1 . The main body 1001 of the puncture template is provided with a set of parallel guide holes 1002 with a fixed distance. When performing minimally invasive treatments such as puncture ablation or seed implantation, doctors need to The location of the lesion, under the guidance of the ultrasound image, is positioned and guided in combination with the puncture template matching the ultrasound image, so that the puncture needle can accurately reach the lesion location.

However, due to individual differences, for example, when performing perineal prostate ablation, the lesion area in some patients may be obscured by the pubic bone. At this time, the needle entry angle of this part is not parallel to the needle entry angle of other unobstructed parts, and the puncture needle needs to be tilted up or down by a certain angle. The traditional parallel guide hole puncture template cannot insert multiple puncture needles with different angles at the same time. At this time, the traditional puncture template not only cannot improve the puncture accuracy, but also prevents the puncture needle from being tilted upward or downward to enter the lesion position covered by the pubic bone, making the operation unable to proceed smoothly.

Therefore, a puncture template that can meet different needle insertion angles is required to solve this problem.

SUMMARY OF THE INVENTION

In order to solve the technical problem that the needle insertion angle of the above-mentioned puncture template is not adjustable, the present invention proposes a puncture template with an adjustable angle, comprising a template body and one or more guide wheels,

the guide wheel is rotatably arranged in the main body of the template;

The guide wheel is provided with a first guide hole for the puncture needle to pass through;

The axis direction of the first guide hole changes with the rotation of the guide wheel.

In one embodiment, the guide wheel has a plate-shaped body and a rotating shaft, the axis of the first guide hole is perpendicular to the axis of the rotating shaft; the axis of the guide wheel is parallel to the plate surface of the template body.

In one embodiment, the rotating shaft is protrudingly disposed on the first side of the plate-shaped body, and the first guide hole is radially opened on the rotating shaft.

In one embodiment, guide flanges through which the first guide holes extend are also protrudingly disposed on both radial sides of the rotating shaft.

In one embodiment, the plate-shaped main body is further provided with a limit hole for a rotating shaft;

There are multiple guide wheels, including at least a pair of guide wheels arranged side by side, and the pair of guide wheels includes a first guide wheel and a second guide wheel,

The first guide wheel and the second guide wheel are arranged in such a manner that their first sides are opposite to each other, the rotation shaft of the first guide wheel is inserted into the rotation shaft limit hole of the second guide wheel, and the second guide wheel The rotation shaft of the guide wheel is inserted into the rotation shaft limiting hole of the first guide wheel, so that the first guide wheel and the second guide wheel define a rotation angle with each other.

In one embodiment, the plate-shaped body is in the shape of a circular plate, and the rotating shaft is arranged at a center position of the circular plate-shaped body.

In one embodiment, the guide wheel is at least partially provided with a first scale line on the visible side rim of the front side of the template body; on the front surface of the template body, the same as the first scale The corresponding lines are provided with marked tick marks.

In one embodiment, the template body is provided with through holes penetrating through its front surface and rear surface;

The template body includes a front cover plate and a rear cover plate, the front cover plate and the rear cover plate are embedded in the through holes of the template body, and the one or more guide wheels are limited to the between the front cover and the rear cover.

In one embodiment, on the opposite rear side of the front cover plate and the front side of the rear cover plate, guide wheel positioning grooves are respectively provided, and the guide wheel positioning groove has a plate-shaped main body with the guide wheel The guide wheel positioning groove is provided with an opening, and the guide wheel defines the rotation angle through the contact between the guide flange and the edge of the opening.

In one embodiment, the guide flange maintains a predetermined distance from the end of the rotating shaft.

In one embodiment, the angle-adjustable puncture template further comprises a guide wheel locking knob, and at least part of the rod wall of the knob rod of the guide wheel locking knob is provided with threads;

A second fixing hole connected to the surface of the plate-shaped body of the corresponding guide wheel is opened on the side wall of the template body, and at least part of the hole wall of the second fixing hole is provided with a thread;

When the guide wheel locking knob is screwed into the second fixing hole, the front end of the knob rod can abut against the plate-shaped main body surface of the corresponding guide wheel.

In one embodiment, the front cover and the rear cover are provided with a plurality of second guide holes parallel to each other and passing through the front cover and the rear cover.

In one embodiment, the template body is provided with through holes penetrating through its front surface and rear surface, the through holes have a shape corresponding to the one or more guide wheels, and the one or more guide wheels are The guide wheel is limited in the through hole.

In one embodiment, the angle-adjustable puncture template further comprises a guide wheel positioning shaft;

On the plate-shaped bodies of the first guide wheel and the second guide wheel, there are also guide wheel positioning holes;

The first guide wheel and the second guide wheel are staggered in a manner that their first sides are opposite to each other, so that in the arrangement direction of the first guide wheel and the second guide wheel, the guide wheel positioning holes of the first guide wheel and the The guide wheel positioning hole of the second guide wheel is not blocked by the opposite side guide wheel;

On the side wall of the template body, a third fixing hole connected to the guide wheel positioning hole of the first guide wheel is opened, and a fourth fixing hole connected to the guide wheel positioning hole of the second guide wheel is opened;

The first guide wheel positioning shaft is inserted into the third fixing hole and passes through the guide wheel positioning hole of the first guide wheel, and the second guide wheel positioning shaft is inserted into the fourth fixing hole and passes through the guide of the second guide wheel. Wheel alignment holes.

In one embodiment, the rotation shaft limiting hole and the guide wheel positioning hole are oppositely opened on both sides of the rotation shaft.

Beneficial effects of the present invention: The angle-adjustable puncture template proposed by the embodiment of the present invention can adapt to the needs of puncture at different angles by setting a guide wheel, and improve the efficiency and puncture accuracy of minimally invasive therapies such as puncture ablation and particle implantation . Further, the puncture angle can be quickly adjusted through the scale mark on the puncture template. The puncture template of the embodiment of the present invention can also be applied to prostate biopsy or puncture therapy and tissue biopsy of other parts.

Description of drawings

Fig. 1 is the schematic diagram of the puncture template of the prior art;

FIG. 2 is a front view of the angle-adjustable puncture template according to the first embodiment of the present invention;

3 is a rear view of the angle-adjustable puncture template according to the first embodiment of the present invention;

4 is an exploded view of the angle-adjustable puncture template according to the first embodiment of the present invention;

5a is a perspective view of one side of the guide wheel of the angle-adjustable puncture template according to the first embodiment of the present invention;

Figure 5b is a perspective view of the other side of the guide wheel of the angle-adjustable puncture template according to the first embodiment of the present invention;

5c is a cross-sectional view of the guide wheel of the angle-adjustable puncture template according to the first embodiment of the present invention;

6 is an assembly structural diagram of two guide wheels of the angle-adjustable puncture template according to the first embodiment of the present invention;

Fig. 7a is a front view of the rear cover plate of the angle-adjustable puncture template according to the first embodiment of the present invention;

Figure 7b is a rear view of the front cover of the angle-adjustable puncture template according to the first embodiment of the present invention;

8 is a perspective view of the template body of the angle-adjustable puncture template according to the first embodiment of the present invention;

9 is a cross-sectional view in the thickness direction of the angle-adjustable puncture template according to the first embodiment of the present invention;

Fig. 10 is a partial enlarged view of the front cover plate of the angle-adjustable puncture template on its template body according to the first embodiment of the present invention;

Fig. 11 is a use state diagram of the angle-adjustable puncture template according to the first embodiment of the present invention;

12 is a front view of an angle-adjustable puncture template according to a second embodiment of the present invention;

13 is a rear view of an angle-adjustable puncture template according to the second embodiment of the present invention;

14 is an exploded view of the angle-adjustable puncture template according to the second embodiment of the present invention;

Fig. 15a is a front view of the rotating shaft side of the guide wheel of the angle-adjustable puncture template according to the second embodiment of the present invention;

15b is a perspective view of one side of the guide wheel of the angle-adjustable puncture template according to the second embodiment of the present invention;

15c is a perspective view of the other side of the guide wheel of the angle-adjustable puncture template according to the second embodiment of the present invention;

15d is a cross-sectional view of the guide wheel of the angle-adjustable puncture template according to the second embodiment of the present invention;

16 is a cross-sectional view in the thickness direction of the angle-adjustable puncture template according to the second embodiment of the present invention;

17a is a front view of the assembled structure of the guide wheel assembly of the angle-adjustable puncture template according to the second embodiment of the present invention;

17b is a perspective view of the assembled structure of the guide wheel assembly of the angle-adjustable puncture template according to the second embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. However, those skilled in the art know that the present invention is not limited to the accompanying drawings and the following embodiments.

As used herein, the term "including" and its various variants can be understood as open-ended terms meaning "including but not limited to". The term "based on" and the like can be understood as "based on at least". The terms "first", "second", "third" and other expressions are only used to distinguish different features and have no substantive meaning. The terms "left", "right", "center" and the like are used only to denote the positional relationship between opposite objects.

An embodiment of the present invention provides a puncture template with an adjustable angle, including a template body 101 and one or more guide wheels 102, the guide wheels 102 are rotatably arranged in the template body 101; the guide wheels 102 There is a first guide hole 111 for the puncture needle to pass through; the axis direction of the first guide hole 111 changes with the rotation of the guide wheel 102 .

Specifically, in the first embodiment of the present invention, as shown in FIGS. 2 to 11 , the angle-adjustable puncture template 100 includes a template body 101 having a front cover 103 and a rear cover 104 , a guide wheel 102 , a cover Plate lock knob 105 and guide wheel lock knob 106.

The template body 101 is provided with through holes 107 penetrating its front and rear surfaces. The template body 101 is further provided with a plurality of second guide holes 108, the second guide holes 108 penetrate through the front surface and the rear surface of the template body 101, and the plurality of second guide holes 108 are parallel to each other and have a preset spacing , for example: the spacing between each guide hole is 0.5mm. The puncture needle can be positioned through the second guide hole 108 under the guidance of ultrasound or other medical imaging equipment to reach the expected target position, which is also the guiding method adopted in the prior art. In addition, on the edge of the front surface of the template body 101 , coordinates corresponding to the plurality of second guide holes 108 parallel to each other are marked for recording the puncturing position.

The structure of the guide wheel 102 of the preferred embodiment of the present invention is shown in FIGS. 5a to 5c. The guide wheel 102 has a plate-shaped body 109 and a rotating shaft 110 protruding on the first side of the plate-shaped body 109 , and the axis of the first guide hole 111 is perpendicular to the axis of the rotating shaft 110 . In this embodiment, the plate-shaped main body 109 is preferably in the shape of a circular plate, and the rotating shaft 110 is disposed at the center of the circular plate-shaped plate-shaped main body 109 . The first guide hole 111 is opened on the protruding rotating shaft 110 along the radial direction of the rotating shaft 110 , and the first guide hole 111 is a straight hole. Guide flanges 112 through which the first guide holes 111 extend are also protruded on two radial sides of the rotating shaft 110 , and the guide flanges 112 maintain a predetermined distance from the end 110 a of the rotating shaft 110 . The plate-shaped main body 109 on the side of the rotating shaft 110 is provided with a rotating shaft limiting hole 113 . In this embodiment, the two side edges of the rotating shaft limiting hole 113 are respectively opposite to the two guide flanges 112 on the rotating shaft 110 . , as shown in Figure 5a.

In this embodiment, there are multiple guide wheels 102 , including two pairs of guide wheels arranged side by side, and each pair of guide wheels includes a first guide wheel and a second guide wheel, as shown in FIG. 6 . The first guide wheel and the second guide wheel are arranged with their first sides facing each other, the shaft 110 of the first guide wheel is inserted into the shaft limit hole 113 of the second guide wheel, and the shaft 110 of the second guide wheel is inserted into into the rotation shaft limiting hole 113 of the first guide wheel, so that the first guide wheel and the second guide wheel can define a rotation angle with each other. In order to facilitate the subsequent use of the guide wheel locking knob 106 to limit the guide wheel 102, the first guide wheel and the second guide wheel are staggered in such a manner that their first sides are opposite to each other, that is, the first guide wheel and the second guide wheel are arranged in a staggered manner. In the arrangement direction of the two guide wheels, one of the first guide wheel and the second guide wheel is not completely blocked by the other. By changing the size of the rotation shaft limiting hole 113 , the rotation range of the first guide wheel and the second guide wheel can be limited. In the case where the guide flanges 112 forming part of the first guide holes 111 are protruded on both radial sides of the rotating shaft 110 , the part of the rotating shaft 110 that is higher than the guide flange 112 is fully or partially inserted into the opposite direction. in the shaft limit hole 113 on the side. In the solution of this embodiment, the first guide wheel and the second guide wheel are arranged staggered in such a manner that their first sides are opposite to each other to limit each other, and the structure is more compact.

In this embodiment, the guide wheel 102 is limited in the through hole 107 by the front cover plate 103 and the rear cover plate 104 . The front cover 103 and the rear cover 104 are embedded in the through hole 107 of the template body 101 , and the two pairs of guide wheels are limited between the front cover 103 and the rear cover 104 . The front surface of the front cover 103 is flush with the front surface of the template body 101 , and the rear surface of the rear cover 104 is flush with the rear surface of the template body 101 . As shown in FIG. 4 , FIG. 7 a and FIG. 7 b , on the rear side of the front cover 103 and the front side of the rear cover opposite to the front cover 103 and the rear cover 104 , guide wheel positioning grooves 114 are respectively provided , the guide wheel positioning groove 114 has a shape that matches the rotation trajectory of the plate-shaped body 109 of the guide wheel 102. In this embodiment, the guide wheel positioning groove 114 has a shape corresponding to the circular plate-shaped plate-shaped body 109 shape, the corresponding guide wheel 102 is limited between the front cover 103 and the rear cover 104, the positioning groove 114 is provided with an opening 114a through the cover, so that the guide wheel 102 on the first The axis of a guide hole 111 can pass through the openings 114a on both sides. As shown in FIG. 4 and FIG. 9 , the axis of the guide wheel 102 is parallel to the plate surface of the template body 101 , so that the guide wheel 102 is rotatably arranged on the template body 101 . The first guide wheel Taking its own rotation axis as the center, it can revolve around the rotation axis 110 of the second guide wheel through its rotation axis limit hole 113; Rotate, so as to adjust the direction in which the axes of the first guide holes 111 of the first guide wheel and the second guide wheel pass through the through hole 103/guide wheel positioning groove 114 to adjust the puncture angle.

As mentioned above, on both radial sides of the rotating shaft 110 there are also protruding guide flanges 112 through which the first guide holes 111 extend, and the guide flanges 112 are held with the end 110a of the rotating shaft 110 The predetermined distance; the two sides of the rotation shaft limit hole 113 are symmetrically arranged with the two guide flanges 112 on the rotation shaft 110 respectively, that is, the axis of symmetry of the rotation shaft limit hole 113 is perpendicular to the first guide hole. axis, as shown in Figure 5a. In the case of using the front cover 103 and the rear cover 104 to limit the guide wheel 102 , the rear surface of the front cover 103 and the front surface of the rear cover 104 are respectively connected to the rotation axis of the guide wheel 102 110 are separated by a predetermined distance, so that the guide wheels 102 can respectively contact the rear side surface of the front cover 103 and the front side surface of the rear cover 104 through the guide flanges 112 on both sides of the rotating shaft 110, especially with the opening 114a edge contact to limit the rotation angle. In this way, when the arrangement shown in FIG. 6 is performed, the problem of mutual interference and influence due to the contact limit between the rotation shaft limit holes 113 of the two guide wheels 102 and the corresponding rotation shaft 110 can be avoided, and due to the By setting, the length of the first guide hole 111 is increased, so that the longer puncture needle shaft is accommodated in the first guide hole 111, so that the puncture needle 119 is not easily offset in the first guide hole 111, and the puncture can be improved. positioning accuracy. Therefore, the provision of the guide flange 112 in this embodiment increases the length of the first guide hole 111 to facilitate fixing the puncture needle, and also functions to limit the rotation angle of the guide wheel, thereby improving the positioning accuracy.

In addition, the front cover 103 and the rear cover 104 are correspondingly provided with a plurality of second guide holes 108 parallel to each other and passing through the front cover 103 and the rear cover 104 , and between the second guide holes 108 parallel to each other. When the guide wheel 102 is rotated so that the first guide hole 111 is parallel to the second guide hole 108 and the second guide hole 108, in the guide hole array formed by the first guide hole 111 and the second guide hole 108, the adjacent guide holes There is a preset spacing between them.

The guide wheel 102 is at least partially provided with a first scale line 116 on the visible side rim on the front side of the front cover 103 (the front surface of the template body) based on the guide wheel positioning groove 114. The front surface of the front cover 103 of the 101 is provided with a marking scale corresponding to the first scale 116, so as to observe the gap between the first scale 116 of the guide wheel 102 and the marking scale on the front cover. The relative position of the first guide hole 111 is determined. For example, when the first scale line 116 rotates by one scale, the rotation angle of the first guide hole 111 is 4 degrees. In this way, when puncturing positioning, it is convenient to grasp the inclination angle of the puncture needle by observing the relative position between the first scale line 116 and the marking scale line on the front cover.

In order to make the structure of the angle-adjustable puncture template of this embodiment more stable, the angle-adjustable puncture template of this embodiment further includes a cover plate locking knob 105, and two cover plate locking knobs 105 are used to lock the front cover plate 103 respectively. It is fixed with the rear cover plate 104, as shown in FIG. 4 , FIG. 8 and FIG. 9 . A first fixing hole 117 connected to the side wall of the front cover 103 and/or the rear cover 104 is opened on the side wall of the template body 101 , and at least part of the hole wall of the first fixing hole 117 is provided with thread. The cover plate locking knob 105 includes a handle and a knob rod, the handle is connected to the rear end of the knob rod, at least part of the rod wall of the knob rod is provided with threads, and the front end of the knob rod is preferably an optical axis . The cover plate locking knob 105 is screwed into the first fixing hole 117, so that the front end of the knob rod can abut against the side wall surface of the front cover plate 103 or the rear cover plate 104, or abut against the front cover plate 103 or the rear cover plate 104. The front cover 103 or the rear cover 104 is fixed in the blind hole on the side wall of the cover 104 . By using the cover plate locking knob 105 to fix the front cover plate 103 and the rear cover plate 104, the angle-adjustable puncture template of this embodiment is easy to disassemble and clean.

In order to fix the axis direction of the first guide hole 111 on the guide wheel 102, the angle-adjustable puncture template of this embodiment further includes a guide wheel locking knob 106, and the guide wheel 102 is limited by the guide wheel locking knob 106, As shown in Figure 4, Figure 8 and Figure 9. A second fixing hole 118 connected to the surface of the plate-shaped body of the corresponding guide wheel 102 is opened on the side wall of the template body 101 , and at least part of the hole wall of the second fixing hole 118 is provided with threads. The guide wheel locking knob 106 includes a handle and a knob rod, the handle is connected to the rear end of the knob rod, at least part of the rod wall of the knob rod is provided with threads, and the front end of the knob rod is preferably an optical axis . The guide wheel locking knob 106 is screwed into the second fixing hole 118, and after the puncture is completed, the guide wheel locking knob 106 is screwed, so that the front end of the knob rod can abut against the plate-shaped main body surface of the corresponding guide wheel 102, and through friction The force restricts the rotation of the guide wheel 102 to achieve the purpose of locking and fix the corresponding guide wheel 102 .

When using the puncture template with adjustable angle of this embodiment to use puncture to treat the lesion area, it is necessary to selectively insert one or more needles into the first guide hole 111 and/or the second guide hole 108 according to the condition of the lesion Puncture needle. For the puncture needle 119 inserted into the first guide hole 111, loosen the limit of the guide wheel locking knob 106 on the guide wheel 102, and move the handle of the puncture needle 119 up and down to drive the guide wheel 102 to rotate, as shown in Figure 11, adjust the first The direction of the axis of a guide hole 111 passing through the through hole 107 enables the puncture needle in the first guide hole 111 to enter the expected lesion position obliquely, and then tighten the guide wheel locking knob 106 to fix the guide wheel 102 , thus completing the puncture.

It should be noted that although there are two pairs of guide wheels 102 in the above embodiment, the puncture angles of the four puncture needles can be adjusted respectively, but those skilled in the art can understand that only a pair of guide wheels 102 are provided on the template body 101. Yes, since two angle-adjustable first guide holes 111 are included, only the puncture angles of two adjacent puncture needles can be adjusted.

Of course, it is simpler to set a guide wheel 102 on the template body 101, and set it independently on the template body 1 to be rotatable, which can also achieve the purpose of adjusting the puncture angles of different numbers of puncture needles. . In this case, it is not necessary to provide the rotation shaft limiting hole 113 in the plate-shaped body 109 .

In the second embodiment of the present invention, as shown in FIGS. 12 to 17 b , the angle-adjustable puncture template 100 includes a template body 101 , a guide wheel 102 and a guide wheel positioning shaft 115 .

Figures 15a to 15c show the structure of the guide wheel 102 of the preferred embodiment of the present invention. The guide wheel 102 has a plate-shaped body 109 and a rotating shaft 110 protruding on the first side of the plate-shaped body 109 , and the axis of the first guide hole 111 is perpendicular to the axis of the rotating shaft 110 . In this embodiment, the plate-shaped main body 109 is preferably in the shape of a circular plate, and the rotating shaft 110 is disposed at the center of the circular plate-shaped plate-shaped main body 109 . On the rotating shaft 110 close to the plate-shaped main body 109 , a first guide hole 111 is opened along the radial direction of the rotating shaft 110 for the puncture needle to pass through, and the first guide hole 111 is a straight hole. On the plate-shaped main body 109 on the side of the rotating shaft 110, a rotating shaft limiting hole 113 and a guide wheel positioning hole 120 are opened. Preferably, the rotating shaft limiting hole 113 and the guide wheel positioning hole 120 are oppositely opened in the Both sides of the rotating shaft 110 .

In this embodiment, there are multiple guide wheels 102, including two pairs of guide wheels arranged side by side, each pair of guide wheels includes a first guide wheel and a second guide wheel, as shown in FIGS. 14, 16, 17a and 17a. 17b. The first guide wheel and the second guide wheel are arranged with their first sides facing each other, the shaft 110 of the first guide wheel is inserted into the shaft limit hole 113 of the second guide wheel, and the shaft 110 of the second guide wheel is inserted into into the rotation shaft limiting hole 113 of the first guide wheel, so that the first guide wheel and the second guide wheel can define a rotation angle with each other, and the above arrangement is the same as that of the first embodiment. By changing the size of the rotation shaft limiting hole 113 , the rotation range of the first guide wheel and the second guide wheel can be limited. Those skilled in the art should understand that the first guide hole 111 provided on the rotating shaft 110 cannot be inserted into the rotating shaft limiting hole 113 of the opposite guide wheel.

In order to facilitate the subsequent use of the guide wheel positioning shaft 115 to limit the guide wheel 102, the first guide wheel and the second guide wheel are staggered in such a manner that their first sides are opposite to each other, so that the first guide wheel and the second guide wheel are staggered. In the arrangement direction of the guide wheels, the guide wheel positioning holes 120 of the first guide wheel and the guide wheel positioning holes 120 of the second guide wheel are not blocked by the opposite side guide wheels. In the solution of this embodiment, the first guide wheel and the second guide wheel are arranged staggered in such a manner that their first sides are opposite to each other to limit each other, and the structure is more compact.

The template main body 101 is provided with a through hole 107 penetrating its front surface and rear surface. The through hole 107 is a guide wheel limiting hole, and has a shape corresponding to the above guide wheel structure to limit the above guide wheel structure. In the through hole 107 , the axis of the first guide hole 111 on the guide wheel 102 can pass through the through hole 107 . As shown in FIG. 14 and FIG. 16 , the axis of the guide wheel 102 is parallel to the plate surface of the template body 101 .

In the limiting method of this embodiment, as shown in FIG. 14-FIG. 17b, on the side wall of the template body 101, a third fixing hole connected to the guide wheel positioning hole 120 of the first guide wheel is opened, and A fourth fixing hole connected to the guide wheel positioning hole 120 of the second guide wheel is opened. The first guide wheel positioning shaft 115 is inserted into the third fixing hole and passes through the guide wheel positioning hole 120 of the first guide wheel, and the second guide wheel positioning shaft 115 is inserted into the fourth fixing hole and passes through the guide wheel positioning hole 120 of the second guide wheel. Guide wheel positioning hole 120 .

In this way, the first guide wheel and the second guide wheel are not only limited by the structure of the rotating shaft 110 and the limiting hole 113 of the rotating shaft, but also fixed by the structure of the positioning shaft 115 of the guide wheel and the positioning hole 120 of the guide wheel. The guide wheel 102 is rotatably arranged on the template body 101 . The first guide wheel is centered on its own rotating shaft, and can rotate around the rotating shaft 110 of the second guide wheel through its rotating shaft limit hole 113; The rotating shaft 110 of the wheel rotates, thereby adjusting the direction in which the axes of the first guide holes 111 of the first guide wheel and the second guide wheel pass through the through hole 107 to adjust the puncture angle. In the solution including the guide wheel positioning shaft 115 and the guide wheel positioning hole 120, preferably, through the limit between the guide wheel positioning hole 120 and the guide wheel positioning shaft 115, the first guide wheel and/or the second guide wheel Rotation is limited.

Similar to the first embodiment, the template body 101 is also provided with a plurality of second guide holes, and on the front surface edge of the template body 101 , the plurality of second guide holes parallel to each other correspond to each other The markers have coordinate values for recording the puncture position. When the guide wheel 102 is rotated so that the first guide hole 111 is parallel to the second guide hole, in the guide hole array formed by the first guide hole 111 and the second guide hole, there is a preset distance between adjacent guide holes.

The guide wheel 102 is at least partially provided with a first scale line 116 on the visible side rim of the template body 101 based on the through hole 107. The scale line 116 is correspondingly provided with a mark scale line, so as to determine the relative position of the first guide hole 111 by observing the relative position between the first scale line 116 of the guide wheel 102 and the mark scale line on the front surface of the template main body 101 . slope.

When using the puncture template with adjustable angle in this embodiment to use puncture to treat the lesion area, it is necessary to selectively insert one or more puncture needles into the first guide hole 111 and the second guide hole 108 according to the condition of the lesion . For the puncture needle inserted into the first guide hole 111, by moving the handle of the puncture needle up and down to drive the guide wheel 102 to rotate, and adjusting the direction in which the axis of the first guide hole 111 passes through the through hole 107, the first guide wheel 102 can be adjusted. The puncture needle in the hole 111 enters the expected lesion position obliquely, thereby completing the puncture.

It should be noted that although there are two pairs of guide wheels 102 in the above embodiment, those skilled in the art can understand that only one pair of guide wheels 102 may be provided on the template body 101 . More simply, one or more guide wheels 102 can be provided on the template main body 101, and they can be individually rotatably arranged on the template main body 1, which can also achieve the ability to adjust the puncture angles of different numbers of puncture needles. Purpose. In this case, it is not necessary to provide the rotation shaft limiting hole 113 in the plate-shaped body 109 .

Compared with the first embodiment, the technical solution of the second embodiment reduces the number of parts and reduces the product cost.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

An angle-adjustable puncture template, characterized in that it comprises a template body and one or more guide wheels,

the guide wheel is rotatably arranged in the main body of the template;

The guide wheel is provided with a first guide hole for the puncture needle to pass through;

The axis direction of the first guide hole changes with the rotation of the guide wheel.
The angle-adjustable puncture template according to claim 1, wherein the guide wheel has a plate-shaped body and a rotating shaft, and the axis of the first guide hole is perpendicular to the axis of the rotating shaft; The axis is parallel to the plate surface of the template body.
The angle-adjustable puncture template according to claim 2, wherein the rotating shaft is protrudingly disposed on the first side of the plate-shaped main body, and the first guide hole is radially opened in the on the reel.
The angle-adjustable puncture template according to claim 3, characterized in that, guide flanges through which the first guide holes extend are also protruded on both radial sides of the rotating shaft.
The angle-adjustable puncture template according to claim 4, wherein the plate-shaped main body is further provided with a limit hole for a rotating shaft;

There are multiple guide wheels, including at least a pair of guide wheels arranged side by side, and the pair of guide wheels includes a first guide wheel and a second guide wheel,

The first guide wheel and the second guide wheel are arranged in such a manner that their first sides are opposite to each other, the rotation shaft of the first guide wheel is inserted into the rotation shaft limit hole of the second guide wheel, and the second guide wheel The rotation shaft of the guide wheel is inserted into the rotation shaft limiting hole of the first guide wheel, so that the first guide wheel and the second guide wheel define a rotation angle with each other.
The angle-adjustable puncture template according to claim 5, wherein the plate-shaped body is in the shape of a circular plate, and the rotating shaft is arranged at the center of the circular plate-shaped plate-shaped body.
The angle-adjustable puncture template according to claim 5, wherein the guide wheel is at least partially provided with a first scale line on the visible side rim on the front side of the template body; On the front surface of the main body of the template, a mark scale line is arranged corresponding to the first scale line.
The angle-adjustable puncture template according to any one of claims 5-7, wherein the template body is provided with through holes penetrating through the front surface and the rear surface of the template body;

The template body includes a front cover plate and a rear cover plate, the front cover plate and the rear cover plate are embedded in the through holes of the template body, and the one or more guide wheels are limited to the between the front cover and the rear cover.
The angle-adjustable puncture template according to claim 8, wherein a guide wheel positioning groove is respectively provided on the opposite rear side of the front cover plate and the front side of the rear cover plate, and the The guide wheel positioning groove has a shape matching the rotation trajectory of the plate-shaped main body of the guide wheel, an opening is provided in the guide wheel positioning groove, and the guide wheel is defined by the contact between the guide flange and the edge of the opening Rotation angle.
The angle-adjustable puncture template according to claim 9, wherein the guide flange maintains a predetermined distance from the end of the rotating shaft.
The angle-adjustable puncture template of claim 8, wherein:

The angle-adjustable puncture template further includes a guide wheel locking knob, and at least part of the rod wall of the knob rod of the guide wheel locking knob is provided with threads;

A second fixing hole connected to the surface of the plate-shaped body of the corresponding guide wheel is opened on the side wall of the template body, and at least part of the hole wall of the second fixing hole is provided with a thread;

When the guide wheel locking knob is screwed into the second fixing hole, the front end of the knob rod can abut against the plate-shaped main body surface of the corresponding guide wheel.
The angle-adjustable puncture template according to claim 8, wherein the front cover plate and the rear cover plate are provided with a plurality of mutually parallel and penetrating first cover plates and the rear cover plate. Two guide holes.
The angle-adjustable puncture template according to any one of claims 5-7, wherein the template body is provided with through holes penetrating through the front surface and the rear surface thereof, and the through holes have a connection with the one The shape corresponding to one or more guide wheels limits the one or more guide wheels in the through holes.
The angle-adjustable puncture template according to claim 13, wherein the angle-adjustable puncture template further comprises a guide wheel positioning shaft;

On the plate-shaped bodies of the first guide wheel and the second guide wheel, there are also guide wheel positioning holes;

The first guide wheel and the second guide wheel are staggered in a manner that their first sides are opposite to each other, so that in the arrangement direction of the first guide wheel and the second guide wheel, the guide wheel positioning holes of the first guide wheel and the The guide wheel positioning hole of the second guide wheel is not blocked by the opposite side guide wheel;

On the side wall of the template body, a third fixing hole connected to the guide wheel positioning hole of the first guide wheel is opened, and a fourth fixing hole connected to the guide wheel positioning hole of the second guide wheel is opened;

The first guide wheel positioning shaft is inserted into the third fixing hole and passes through the guide wheel positioning hole of the first guide wheel, and the second guide wheel positioning shaft is inserted into the fourth fixing hole and passes through the guide of the second guide wheel. Wheel alignment holes.
The angle-adjustable puncture template according to claim 14, wherein the rotation shaft limiting hole and the guide wheel positioning hole are oppositely opened on both sides of the rotation shaft.