CN219895839U

CN219895839U - Visual screw tap assembly

Info

Publication number: CN219895839U
Application number: CN202320886033.5U
Authority: CN
Inventors: 夏桂锋
Original assignee: Chongqing Bosscan Technology Co ltd
Current assignee: Chongqing Bosscan Technology Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-10-27
Anticipated expiration: 2033-04-19

Abstract

The utility model belongs to the field of surgical instruments with navigation functions, and particularly relates to a visual screw tap assembly, which comprises a screw tap body, a screw part and a tip part, wherein the screw part is formed at the front end of the screw body; an optical navigation component comprising a reference frame and an optical ball fixed on the reference frame; the clamping assembly is detachably sleeved on the rod body and can rotate circumferentially relative to the rod body; the reference frame is connected with the clamping assembly, and the optical ball is used for positioning the tip of the tap body. The reference frame is detachably arranged on the rod body through the clamping assembly, so that the navigation component can assemble tap bodies of various specifications, the reference frame can be controlled to be fixed in the operation process, the stability of the rotation process of the tap body can be improved, the phenomenon that the sight of medical staff is blocked due to the fact that the reference frame follows the rotation of the tap body can be avoided, and the interference in the operation process is reduced.

Description

Visual screw tap assembly

Technical Field

The utility model belongs to the field of surgical instruments with navigation functions, and particularly relates to a visual screw tap assembly.

Background

In some procedures, tapping and stapling operations are required on bone. Tap instruments are widely used in bone surgery as one of the important tools for tapping operations.

Because the structure of traditional tap apparatus is simple, can't accurate judgement tap apparatus bore the degree of depth of skeleton when utilizing the tap apparatus alone to carry out the tapping operation, for reducing the damage of tap apparatus to skeleton, need use drilling apparatus to make the bottom opening on the skeleton earlier when carrying out the tapping operation, then utilize the tap apparatus to make the screw thread in the bottom opening, need use CT perspective repeatedly in drilling and tapping operation in-process in order to verify drilling and tapping position, direction and degree of depth, its step is loaded down with trivial details and operation inefficiency.

Because the existing medical technical field also comprises means for navigating the instrument by adopting optical navigation, after the optical navigation technology is applied to the tap instrument, the depth of the tap instrument drilled into the bone can be directly observed, so that the drilling and tapping operations can be synchronously carried out to omit the operation of independently manufacturing the bottom hole, and further the operation efficiency is improved.

However, the optical navigation technology needs to set the reference frame on the instrument, if the reference frame is directly fixed on the tapping instrument, the reference frame rotates along with the tapping instrument in the process of drilling and tapping, and the rotating reference frame can shield the vision of medical staff to influence the operation.

Disclosure of Invention

The utility model aims to provide a visual screw tap assembly, which applies an optical navigation technology to the screw tap assembly, and can avoid the reference frame from shielding the sight of medical staff in the operation process and reduce the interference in the operation process.

According to an embodiment of the present utility model, there is provided a visual tap assembly comprising:

the screw tap comprises a rod body, a spiral part formed at the front end of the rod body and a tip part formed at the front end of the spiral part;

an optical navigation component comprising a reference frame and an optical ball fixed to the reference frame;

the clamping assembly is detachably sleeved on the rod body and can circumferentially rotate relative to the rod body;

the reference frame is connected with the clamping assembly, and the optical ball is used for positioning the tip of the tap body.

In some embodiments, the clamping assembly comprises a sleeve sleeved on the rod body and a buckle connected with the sleeve; the middle part of the buckle is hinged with the sleeve, one end part of the buckle is connected with the sleeve through a spring, and the other end part of the buckle is provided with a clamping joint;

the reference frame is arranged on the sleeve, an annular groove matched with the clamping connector is formed in the rod body, one end portion of the clamping buckle is pushed by the spring to be away from the sleeve, so that the other end portion of the clamping buckle extends into the inner side of the sleeve, and the clamping connector is buckled into the annular groove.

In some embodiments, the number of the buckles is at least two, and at least two buckles are distributed in a rotationally symmetrical manner.

In some embodiments, the number of snaps is two.

In some embodiments, a mounting groove is formed in the peripheral wall of the sleeve and used for accommodating the buckle, and a rotating shaft is arranged in the mounting groove so as to be connected with the middle part of the buckle;

the mounting groove is provided with an avoidance hole corresponding to the clamping connector, and the avoidance hole penetrates from the bottom of the mounting groove to the inner peripheral wall of the sleeve; one end of the spring is connected with the buckle, and the other end of the spring is connected with the bottom of the mounting groove.

In some embodiments, the rod body is further provided with a limiting boss, and the limiting boss is located in front of the annular groove and is used for abutting against the sleeve.

In some embodiments, the tap body has a first through hole formed therein, the first through hole extending from a rear end of the tap body to a front end of the tap body.

In some embodiments, the rear end opening of the first through hole is located on the rear end face of the rod body, and the front end opening of the first through hole is located on the side wall of the spiral portion.

In some embodiments, the rear end of the lever body is connected to a handle via a quick connector, the handle being a ratchet handle.

In some embodiments, a second through hole is formed in the handle, the second through hole penetrates from the rear end of the handle to the front end of the handle, and the second through hole is communicated with the first through hole.

In the visual screw tap assembly, the reference frame is detachably arranged on the rod body through the clamping assembly, so that the navigation component can be assembled with screw tap bodies of various specifications to meet the tapping requirements of different sizes. Because the reference frame can rotate circumferentially relative to the rod body, medical staff can control the reference frame to be kept fixed by one hand in the operation process and rotate the tap body by the other hand. After the reference frame is kept fixed, the stability of the screw tap body in the rotation process can be improved, the phenomenon that the line of sight of medical staff is blocked due to the fact that the reference frame follows the screw tap body to rotate can be avoided, and interference in the operation process is reduced.

Drawings

FIG. 1 is a schematic diagram of an axial structure of a visual screw tap assembly according to the present embodiment;

FIG. 2 is a schematic cross-sectional view of a visual screw tap assembly according to the present embodiment;

FIG. 3 is a schematic cross-sectional view of a connection between a clamping assembly and a rod body;

fig. 4 is an enlarged schematic view of the structure at a in fig. 1.

In the figure, a rod body 10; an annular groove 101; a limit boss 102; a spiral portion 11; a tip 12; a first through hole 13; a front end opening 131; a clamping assembly 20; a sleeve 21; a mounting groove 211; a relief hole 212; a clasp 22; a bayonet joint 221; a limit part 222; a spring 23; an optical ball 30; a reference frame 31; a handle 40; and a second through hole 41.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that the illustrations provided in the present embodiment are merely schematic illustrations of the basic idea of the present utility model.

The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are particularly adapted to the specific details of construction and the use of the utility model, without departing from the spirit or essential characteristics thereof, which fall within the scope of the utility model as defined by the appended claims.

The azimuth words such as "front end" and "front" refer to the direction of the visual tap assembly towards human tissue, and the azimuth words about "rear end" and "rear" refer to the direction of the visual tap assembly away from human tissue.

References in this specification to orientations or positional relationships as "upper", "lower", "left", "right", "intermediate", "longitudinal", "transverse", "horizontal", "inner", "outer", "radial", "circumferential", etc., are based on the orientation or positional relationships shown in the drawings, are also for convenience of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the present embodiment provides a visual tap assembly including a tap body and an optical navigation component disposed on the tap body. The tap body includes a shank 10, a screw portion 11 formed at a front end of the shank 10, and a tip portion 12 formed at a front end of the screw portion 11. The optical navigation component comprises a reference frame 31 and an optical ball 30 fixed on the reference frame 31, the reference frame 31 is detachably arranged on the rod body 10 through the clamping component 20, the reference frame 31 can circumferentially rotate relative to the rod body 10, and the optical ball 30 is used for positioning the tip 12 of the tap body.

In this embodiment, the reference frame 31 is detachably disposed on the rod body 10 through the clamping assembly 20, so that the navigation component can be assembled with tap bodies of various specifications to meet tapping requirements of different sizes. Because the reference frame 31 can rotate circumferentially relative to the rod body 10, a medical staff can control the reference frame 31 to remain fixed by one hand and rotate the tap body by the other hand during the operation. After the reference frame is kept fixed, the stability of the screw tap body in the rotation process can be improved, the phenomenon that the line of sight of medical staff is blocked due to the fact that the reference frame follows the screw tap body to rotate can be avoided, and interference in the operation process is reduced.

It should be noted that, the optical ball 30 locates the tip 12 of the tap body, and the axial and radial distances between the optical ball 30 and the tip 12 of the tap body are all kept unchanged, so that the optical ball 30 still can accurately locate the tip 12 of the tap body after the sleeve 21 rotates circumferentially relative to the rod 10. The principle of positioning an object by adopting an optical navigation technology is that in the prior art, the optical navigation technology is applied to the tap body in the embodiment, and the tip 12 of the tap body is specifically bound by the optical ball 30 so as to accurately track the position, the direction and the depth of drilling and tapping operations.

Referring specifically to fig. 2 and 3, the clamping assembly 20 preferably includes a sleeve 21 that is sleeved on the rod body 10, and a buckle 22 of the training sleeve 21. The middle part of the buckle 22 is hinged with the sleeve 21, one end part of the buckle 22 is connected with the sleeve 21 through a spring 23, and the other end part of the buckle 22 is provided with a clamping joint 221.

The reference frame 31 is arranged on the sleeve 21, the rod body 10 is provided with an annular groove 101 which is matched with the clamping connector 221, and the spring 23 drives one end part of the clamping buckle 22 to be far away from the sleeve 21, so that the other end part of the clamping buckle 22 stretches into the inner side of the sleeve 21 and is buckled into the annular groove 101 through the clamping connector 221.

During operation, one end of the connecting spring 23 of the buckle 22 is pressed, so that the clamping head 221 at the other end of the buckle 22 is opened towards the outer side of the sleeve 21, and the optical navigation component on the clamping assembly 20 is assembled on the tapping body with proper spiral size; then medical staff holds the sleeve 21 with one hand and rotates the tap body with the other hand, so that the tap body drills into the bone while rotating relative to the sleeve 21, and the tap body synchronously forms threads when drilling holes in the bone.

In this embodiment, the sleeve 21 of the clamping assembly 20 is connected with the annular groove 101 on the rod body 10 through the buckle 22, so that the assembled sleeve 21 can rotate circumferentially relative to the rod body 10, but cannot move axially relative to the rod body 10, so as to ensure that the optical balls 30 and 12 keep a fixed distance in the axial direction and the radial direction of the rod body 10.

The number of the buckles 22 in the embodiment is at least two, and at least two buckles 22 are rotationally symmetrically distributed. Compared with the situation that a single buckle 22 is arranged, at least two buckles 22 which are rotationally symmetrically distributed can ensure that the rod body 10 is uniformly stressed in the radial direction, and the coaxiality of the rod body 10 and the sleeve 21 is ensured. The number of the buckles 22 is particularly preferably two, so that a medical staff can press the two buckles 22 by one hand, and the operation is convenient.

Referring specifically to fig. 3, a mounting groove 211 is formed in the outer peripheral wall of the sleeve 21 to accommodate the buckle 22, and a rotation shaft is provided in the mounting groove 211 to connect the middle of the buckle 22. The bottom of the mounting groove 211 is provided with a relief hole 212 corresponding to the clamping joint 221 of the clamping buckle 22, and the relief hole 212 penetrates to the inner peripheral wall of the sleeve 21 so as to be communicated with the inner side of the sleeve 21. One end of the spring 23 is connected with the buckle 22, and the other end is connected with the bottom of the mounting groove 211, so that the structure is compact.

In some embodiments, the front end of the clip is further formed with a limiting portion 222 protruding, and the mounting groove 211 is formed with a limiting step, where the limiting step is used to abut against the limiting portion 222, so as to limit the distance that the clip extends into the inner side of the sleeve.

In this embodiment, the rod body 10 is further provided with a limiting boss 102, the limiting boss 102 is located in front of the annular groove 101 and is used for abutting against the sleeve 21, and the limiting boss 102 can limit the sleeve 21, so that the clamping assembly 20 is prevented from moving forward relative to the rod body 10 in the tapping process.

Referring specifically to fig. 2, a first through hole 13 is formed in the tap body, and the first through hole 13 penetrates from the rear end of the tap body to the front end of the tap body for threading a guide wire. After the medical staff controls the tap body to drill into the bone, firstly, threading the guide wire from the rear end of the first through hole 13 to the front end of the first through hole 13; then the operation screw tap assembly leaves along the guide wire, and then a screw with a through hole is sleeved on the guide wire and reaches a thread along the guide wire; finally, the guide wire is drawn out to finish the nail placement.

Referring specifically to fig. 2 and 4, the rear end opening of the first through hole 13 is located on the rear end face of the rod body 10, and the front end opening 131 of the first through hole 13 is located on the side wall of the spiral portion 11, so that the front end opening 131 of the first through hole 13 is located behind the tip portion 12, and the tip portion 12 is ensured to be solid, and has higher hardness so as to meet the drilling requirement. In some embodiments, the tip 12 may optionally be quenched to further increase the hardness of the tip 12.

Referring specifically to fig. 2, the rear end of the rod body 10 is connected to a handle 40 via a quick connector, which facilitates the medical staff to hold and rotate the tap body. The handle 40 is preferably a ratchet handle 40, the ratchet handle 40 can control the tap body to realize unidirectional left rotation or unidirectional right rotation through a ratchet mechanism, and the operation is convenient. The handle 40 is provided with a second through hole 41, the second through hole 41 penetrates from the rear end of the handle 40 to the front end of the handle 40, the second through hole 41 is communicated with the first through hole 13, and the second through hole 41 is convenient to penetrate through a guide wire. It should be noted that, since the connection of the ratchet handle 40 to the tap body is a conventional technical means in the art, the description of this embodiment is omitted.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A visualization tap assembly, comprising:

the screw tap comprises a rod body (10), a spiral part (11) formed at the front end of the rod body (10) and a tip part (12) formed at the front end of the spiral part (11);

an optical navigation component comprising a reference frame (31) and an optical ball (30) fixed on the reference frame (31);

the clamping assembly (20) is detachably sleeved on the rod body (10), and the clamping assembly (20) can circumferentially rotate relative to the rod body (10);

the reference frame (31) is connected with the clamping assembly (20), and the optical ball (30) is used for positioning the tip (12).

2. The visual tap assembly of claim 1, wherein: the clamping assembly (20) comprises a sleeve (21) sleeved on the rod body (10), and a buckle (22) connected with the sleeve (21); the middle part of the buckle (22) is hinged with the sleeve (21), one end part of the buckle (22) is connected with the sleeve (21) through a spring (23), and the other end part of the buckle (22) is provided with a clamping joint (221);

the reference frame (31) is arranged on the sleeve (21), an annular groove (101) matched with the clamping connector (221) is formed in the rod body (10), one end portion of the buckle (22) is pushed by the spring (23) to be away from the sleeve (21), so that the other end portion of the buckle (22) stretches into the inner side of the sleeve (21), and the other end portion of the buckle is buckled into the annular groove (101) through the clamping connector (221).

3. The visual tap assembly of claim 2, wherein: the number of the buckles (22) is at least two, and at least two buckles (22) are distributed in a rotationally symmetrical mode.

4. A visual tap assembly as claimed in claim 3 wherein: the number of the buckles (22) is two.

5. A visual tap assembly according to claim 2 or 3, wherein: a mounting groove (211) is formed in the peripheral wall of the sleeve (21) and used for accommodating the buckle (22), and a rotating shaft is arranged in the mounting groove (211) so as to be connected with the middle part of the buckle (22);

the mounting groove (211) is provided with an avoidance hole (212) corresponding to the clamping joint (221), and the avoidance hole (212) penetrates from the bottom of the mounting groove (211) to the inner peripheral wall of the sleeve (21); one end of the spring (23) is connected with the buckle (22), and the other end is connected with the bottom of the mounting groove (211).

6. The visual tap assembly of claim 5, wherein: and the rod body (10) is also provided with a limiting boss (102), and the limiting boss (102) is positioned in front of the annular groove (101) and is used for abutting against the sleeve (21).

7. The visual tap assembly of claim 6, wherein: the screw tap is characterized in that a first through hole (13) is formed in the screw tap body, and the first through hole (13) penetrates from the rear end of the screw tap body to the front end of the screw tap body.

8. The visual tap assembly of claim 7, wherein: the rear end opening of the first through hole (13) is positioned on the rear end face of the rod body (10), and the front end opening (131) of the first through hole (13) is positioned on the side wall of the spiral part (11).

9. The visual tap assembly of claim 8, wherein: the rear end of the rod body (10) is connected with a handle (40) through a quick connector, and the handle (40) is a ratchet handle (40).

10. The visual tap assembly of claim 9, wherein: a second through hole (41) is formed in the handle (40), the second through hole (41) penetrates from the rear end of the handle (40) to the front end of the handle (40), and the second through hole (41) is communicated with the first through hole (13).