CN217566299U - Identification module - Google Patents

Abstract

The utility model relates to an identification module, including identification component (1), identification component (1) still includes base (2) including support column (11) and identification ball (12), the one end of base (2) has bottom plate (3), the one end of support column (11) has along axial extension and is adapted to spread groove (111) of base (2) appearance. The utility model discloses can make the patient not have the mark characteristic of obtaining of creating.

Description

Identification module

Technical Field

The utility model relates to an identification module.

Background

The marker adopted by the existing medical auxiliary navigation system is usually a bracket type marker ball, and a special chuck is required to be fixed on the surface of a bone of a patient, so that a large iatrogenic wound surface can be caused, the marker ball cannot be fixed on the patient before entering an operating room, and a navigation system matched with the marker can identify the characteristic positioning and is used for intraoperative navigation only by relying on intraoperative three-dimensional imaging equipment such as an intraoperative CT or O-arm machine and the like. Because navigation in the operation is performed in an operating room and is limited by space, the operating room is only provided with basic image acquisition equipment capable of ensuring the operation, and equipment capable of being provided with three-dimensional imaging is limited, so that more three-dimensional imaging information cannot be acquired through the equipment in the operating room in the operation. In addition, the time during the operation is also limited, and if information fusion is performed again, the operation time is further prolonged, thereby increasing the risk during the operation. The navigation in the operation also depends on the experience of doctors and the images in the operation process for judgment and decision, the image data before the operation can only be used as the data source of the experience of the doctors, and the difficulty of data analysis and feature matching algorithm for the data collected by different equipment, different time periods and different technical means is high. In addition, the fixing method using the marker ball of the stent type is also affected by the stent, and particularly, the stent is deformed during fixing, so that when the fixing is released, the stent and the hard tissue relatively move, thereby affecting the accuracy of data. Of course, there are other markers for assisting navigation systems in the prior art, such as implanted k-wires/bone needle cores, but these methods all depend on the k-wires or bone needle cores that have been implanted into the patient's bones, and therefore, a large iatrogenic injury wound surface is also caused before the operation. Therefore, a technical scheme capable of realizing multi-modal data fusion is urgently needed because the information acquisition mode in the operation is single and the information fusion capability is not provided (or the fusion capability is poor).

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an identification module.

In order to achieve the above object, the utility model provides an identification module, including the identification subassembly, the identification subassembly includes support column and identification ball, still includes the base, the one end of base has the bottom plate, the one end of support column has along axial extension and is adapted to the spread groove of base appearance.

According to one aspect of the utility model, the base is cylindrical, the side surface is provided with a clamping strip, and the middle part is provided with a through hole;

the groove wall of the connecting groove is provided with a clamping groove matched with the clamping strip.

According to the utility model discloses an aspect, the sign subassembly still includes the identification plate, the side of support column is equipped with and is used for holding the storage tank of identification plate.

According to one aspect of the utility model, a mounting groove is arranged on the side surface of the supporting column, and the identification ball is arranged in the mounting groove;

the identification plate is provided with a hole corresponding to the mounting groove;

the identification plate is also provided with an optical positioning mark which is a square grid or a two-dimensional code with black and white alternated.

According to the utility model discloses an aspect, the base with the position that the bottom plate is connected is equipped with the location arch, the tip of support column is equipped with and is applicable to the bellied constant head tank in location.

According to one aspect of the present invention, the identification component further comprises a piston rod and a stylet;

the piston rod comprises a rod body and a sliding head positioned at one end of the rod body, and the stylet is connected to the sliding head.

According to one aspect of the utility model, the utility model also comprises a needle cylinder, wherein a first guide hole and a second guide hole which extend along the axial direction are arranged in the needle cylinder;

the first guide hole, the second guide hole and the connecting groove are sequentially arranged along the axial direction of the needle cylinder in a coaxial mode and are communicated with one another.

According to one aspect of the present invention, the sliding head is movably located in the first guiding hole, one end of the rod body away from the sliding head extends out of the needle cylinder, and the stylet is movably located in the second guiding hole;

the rod body is sleeved with a first spring, and the first spring is located in the first guide hole.

According to one aspect of the present invention, the identification component further comprises a blocking member;

the blocking piece comprises an annular body, a button, a second spring and a connecting body;

the button and the second spring are respectively connected to two sides of the outer edge of the annular body, and the button is connected with the annular body through the connecting body;

the annular body is positioned in the first guide hole, and the second spring is also connected with the needle cylinder;

the side surface of the needle cylinder is provided with a through hole and a receiving groove, the connecting body is movably positioned in the through hole, and the button can be pressed into the receiving groove.

The annular body is eccentric to the first guide hole when the button is not pressed;

the annular body is coaxial with the first guide hole upon pressing the button into the receiving groove.

According to the utility model discloses an aspect, the not coplane of identification ball sets up more than four, and arbitrary three the identification ball is the collineation not.

According to the utility model discloses an aspect, the material of bottom plate is picc, the material of support column is POM or PEEK, the material of identification ball is aluminum alloy or titanium alloy.

According to one aspect of the utility model, when in use, the bottom plate is pasted on the body surface of a patient or an auxiliary treatment jig, and the relative spatial position data of the surgical site of the patient and the identification module is obtained;

before operation, the needle core is used for fixing the identification module and the hard tissue of the operation part, and the relative spatial position data of the operation part and the identification module is collected in the operation;

the preoperative and intraoperative position data are fused through the conversion relation, and the surgical site information is obtained so as to guide a surgical robot or a navigation system to carry out surgical assistance.

According to one aspect of the present invention, the spatial position of the identification module in the preoperative CT and the spatial position of the patient part in the preoperative CT are obtained by using the preoperative CT, and the spatial position of the identification module relative to the patient part in the preoperative CT is obtained by conversion;

identifying an optical positioning mark through spatial information acquisition equipment in an operation, placing an operation part and an identification module in a working area of a three-dimensional positioning system, identifying the spatial position of the identification module in a system coordinate system, and obtaining the real-time spatial position of the identification module in the operation;

the spatial information acquisition equipment comprises a C-arm machine, an O-arm machine, a CBCT or a binocular vision camera.

According to one aspect of the utility model, the DICOM slice image of CT/MRI obtained before the operation includes the operation site of the patient and the identification ball, and the coordinate value P { P1, P2, P3,. Once, PN } of the identification ball under the DICOM image coordinate system is calculated;

combining a data set Bc { B1c, B2c, B3 c., BNc } of the fractured bone in a CT coordinate system, calculating a spatial position T2 of the identification module relative to the patient part in the preoperative CT by using the following formula:

Bc＝T2*P；

acquiring real-time space poses An { A1, A2, A3,. And AN } of the identification module in An operation through space information acquisition equipment, and calculating coordinate values Q { Q1, Q2, Q3,. And QN } of the identification ball under the space information acquisition equipment;

combining a real-time data set Bs { B1s, B2s, B3s,. And BNs } of the broken bone under the spatial information acquisition equipment, fitting an optimal transformation relation T1 between a CT coordinate system and a spatial information acquisition equipment coordinate system by a least square method according to the following formula:

Q＝T1*P；

calculating the pose of each broken bone under the magnetic field coordinate system in real time by using the following formula, and rendering and displaying:

Bs＝An*T1*Bc。

according to the utility model discloses a conceive, provide an identification module group for medical navigation operation auxiliary system, can be used to the CT scanning and have extractable marker ball characteristic in the image of CT scanning. The identification module can be attached to the surface of skin or the surface of other treatment-assisting tools, so that the patient can carry out preoperative CT scanning along with the surgical site of the patient to obtain the relative spatial position of the surgical site and the identifier module, and the patient can carry the identifier characteristics by non-invasive scanning in hospital admission. After the operation link is entered, in order to ensure the hard connection between the marker module and the hard tissue (such as a certain bone) of the operation position of the patient, thereby facilitating the operation navigation equipment (such as a binocular vision system) to track the space displacement and the posture of the hard tissue of the operation position, the marker module is also provided with a sterile needle core, thereby being capable of puncturing the skin and being positioned on the hard tissue.

According to the utility model discloses a scheme utilizes marker feature before the art and in the art image to match for robot or navigation develop the operation supplementary, make the medical image data of gathering when the patient is admitted to the hospital abundanter and nimble (can contain CT, MRI etc.), and image quality is higher. By using the parameters of the external marker in the images before and during the operation for reference, the data acquired by different equipment, different time periods and different technical means are assisted to be matched, so that the matching precision is higher, the resources required by matching are saved, the matching time is shorter, the waiting time in the operation is greatly shortened, and more operation risks are avoided.

According to the utility model discloses a scheme utilizes the supplementary realization of medical identification module to have the wound fracture to reset, can realize image matching in the art before the art under the clinical condition, and then realizes the auxiliary means that is used for image matching in the art before the art under the clinical condition. Mark marker can be installed and multiple abundant image data are obtained to noninvasive installation before patient's operation for with intraoperative acquisition data fusion, thereby obtain abundanter operation position information, with the supplementary operation of guiding robot or navigation to carry out, make the fusion degree of difficulty greatly reduced of multimode information, make the operation mode more nimble.

Drawings

Fig. 1 is a view schematically showing the construction of a sign module (hidden recognition board) according to an embodiment of the present invention;

FIG. 2 is a block diagram schematically illustrating an identification module according to one embodiment of the present invention (hidden base);

FIG. 3 is a block diagram schematically illustrating a base according to an embodiment of the present invention;

FIG. 4 is a block diagram schematically illustrating a support post according to one embodiment of the present invention (without identification balls installed);

FIG. 5 is a front view schematically illustrating a support post (after installation of a marker ball) according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating the mating of a support post with an identification plate according to one embodiment of the present invention;

FIG. 7 is a cross-sectional view schematically illustrating a marker assembly (with a needle cartridge) according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view schematically illustrating a marker assembly (with a needle cartridge) according to an embodiment of the present invention;

fig. 9 is a flow chart schematically illustrating the use of the identification module according to an embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and other terms are used in an orientation or positional relationship shown in the associated drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the present invention is not limited to the following embodiments.

Referring to fig. 1 to 4, the identification module of the present invention, including identification component 1 and base 2, identification component 1 includes support column 11 and identification ball 12, and base 2's one end has bottom plate 3, and support column 11's one end has the spread groove 111 that extends along the axial and is adapted to base 2 appearance. The base 2 is cylindrical, the side surface of the base is provided with a clamping strip 21, and the middle part of the base is provided with a through hole 22 which is a needle eye preformed hole. The groove wall of the connecting groove 111 is provided with a clamping groove 112 capable of being matched with the clamping strip 21. The position that base 2 and bottom plate 3 are connected is equipped with the protruding A of location, and the tip of support column 11 is equipped with the constant head tank B who is applicable to the protruding A of location.

Referring to fig. 5 and 6, the sign assembly 1 further includes an identification plate 17, and the side surface of the support post 11 is provided with a receiving groove 113 for receiving the identification plate 17. The side of the support column 11 is provided with a mounting groove 114, and the identification ball 12 is arranged in the mounting groove 114. The recognition plate 17 is provided with a hole 171 corresponding to the position of the mounting groove 114. The identification plate 17 is further provided with an optical positioning mark designed according to a certain rule, and the optical positioning mark is a black and white grid (or other identification patterns) or a two-dimensional code arranged by printing or pasting, so that data is provided for identification of surgical navigation equipment (such as a binocular vision system). The four identification balls 12 are arranged non-coplanar, and any three identification balls 12 are not collinear. In fact, there are n kinds of marking points in the preoperative marking and the intraoperative marking, and one kind of marking is a different arrangement mode of the marking ball 12. The same preoperative marker and intraoperative marker are arranged in the same way, namely the preoperative marker n and the intraoperative marker n are arranged in the same way. The marking assembly 1 is fixed on the base 2 before operation, the relative coordinates between the base 2 and the marking assembly 1 are known, and the spatial coordinates of the four marking balls 12 on the identification module can be obtained by scanning CT. The CT scanning is performed preoperatively, preoperative marks 1, preoperative marks 2, \ 8230 \ 8230:, preoperative marks n and the like are marked according to different spatial arrangements of the marking balls 12, preoperative and intraoperative marking components 1 of the same bone block are the same, and the arrangement of intraoperative marks corresponds to the preoperative marks, namely the arrangement of intraoperative marks 1 is equal to that of preoperative marks 1, the arrangement of intraoperative marks 2 is equal to that of preoperative marks 2, and the arrangement of intraoperative marks n is equal to that of preoperative marks n. The preoperative relative spatial poses of all the marker balls 12 and the bone blocks n are obtained through preoperative CT scanning, intraoperative relative spatial poses of all the marker balls 12 and the bone blocks n are obtained through intraoperative CT scanning, intraoperative positioning to the bone blocks n is achieved through preoperative intraoperative CT fusion, visual patterns on a marker plate are tracked through surgical navigation equipment (such as a binocular vision system), and the spatial displacement and the posture of the hard tissues of the operation position are tracked.

In the utility model, the bottom plate 3 is made of picc, and the bottom surface can be pasted; the support post 11 is made of hard plastic such as POM or PEEK (other structures in the marker assembly 1 can be made of these materials), and the marker ball 12 is made of aluminum alloy or titanium alloy.

According to the arrangement, when the fracture information is acquired after the patient is admitted, the bottom plate 3 is pasted on the surface of the skin or the surface of other auxiliary treatment jigs. When data needs to be collected, the identification component 1 is firstly arranged on the base 2, namely the base 2 is inserted into the supporting column 11, and the circumferential relative movement of the limiting device is limited by the clamping groove 112 and the clamping strip 21, so that a certain state can be effectively kept between the identification component 1 and the base 2 by the matching of the clamping groove 112 and the clamping strip 21. After the identification module is assembled (four identification balls 12 consisting of metal balls made of aluminum alloy materials or titanium alloy materials are arranged on the identification module), medical image data before operation are collected along with the operation part of the patient, and the collection equipment comprises CT, MRI and the like. After CT is scanned, the spatial position of the marker under the CT coordinate system and the spatial position of the operation part under the CT coordinate system are obtained before the operation, at the moment, the relative spatial position of the operation part of the patient and the module can be obtained, and the marking assembly 1 can be selectively detached after data is obtained, and the base 2 is left.

Referring to fig. 7 and 8, the identification assembly 1 further comprises a plunger rod 13, a (sterile) core 14, a barrier 16 and a barrel 20, which also constitute core securing means. The piston rod 13 includes a rod 131 and a sliding head 132 at the lower end of the rod 131, and the upper end of the stylet 14 is connected to the sliding head 132. The cylinder 20 has a first guide hole 115 and a second guide hole 116 extending in the axial direction therein. The first guide hole 115, the second guide hole 116 and the connection groove 111 are coaxially and sequentially arranged in the axial direction of the cylinder 20, and are communicated with each other. The sliding head 132 is movably located in the first guide hole 115, the upper end of the rod 131 extends out of the syringe 20, and the stylet 14 is movably located in the second guide hole 116. The rod 131 is sleeved with a first spring 15, and the first spring 15 is located in the first guide hole 115. The blocking member 16 includes an annular body 161, a button 162, a second spring 163, and a connecting body 164. The button 162 and the second spring 163 are respectively connected to both sides of the outer edge of the annular body 161, and the button 162 is connected to the annular body 161 by a connecting body 164. The annular body 161 is located in the first guide hole 115, and the second spring 163 is connected to the cylinder 20. For mounting the ring-shaped body 161, the syringe 20 may be provided as a separate device having a plurality of parts, for example, the syringe 20 may be divided into an upper part and a lower part at the position where the ring-shaped body 161 is placed, and the ring-shaped body 161 may be placed therein, and the two parts may be fixed by screws, and the outer portion of the upper part may be provided with threads to be connected to the third part by means of the threads. The side surface of the cylinder 20 is provided with a passing hole 117 and a receiving groove 118, and the connecting body 164 is movably positioned in the passing hole 117 and the button 162 can be pressed into the receiving groove 118. When the button 162 is not pressed, the annular body 161 is eccentric to the first guide hole 115; after the push button 162 is pressed into the receiving groove 118, the annular body 161 is coaxial with the first guide hole 115, thereby allowing the upper piston rod 13 to pass therethrough. Of course, the bottom of the syringe 20 should also have a positioning groove C, a connecting groove D and a locking groove adapted to the structure of the base 2.

Thus, when preparing for operation, the syringe 20 with the identification ball 12 and the needle core 14 therein is fastened with the base 2, the external button 162 is pressed, so that the blocking member 16 is in an open state, the first spring 15 in a compressed state pushes the piston rod 13, so that the piston rod 13 is ejected together with the needle core 14 thereon to pierce into skin, and then the piston rod 13 is clamped by an external device (an electric drill), so that the needle core 14 is driven to be strongly fixed in hard tissue, so as to further fasten the identification module through a steel needle. The barrel 20 may then be removed and the needle may be retained with the hard tissue with the core 14 already in strong association with the hard tissue to stabilize the marker module with the hard tissue at the surgical site, and the support post 11 may, of course, be secured to the needle. The two matching structures are provided between the stylet 14 and the rod 131, and between the stylet 13 and the identification module, for example, the upper end of the stylet 14 is a quadrangular prism, and the bottom of the rod 131 is provided with a quadrangular groove, so that the two are tightly connected and fixed, and the current state between the two devices can be effectively maintained. Therefore, the patient operation part and the identification module can be subjected to data acquisition through the spatial information acquisition equipment in the operations such as the C-arm machine, the O-arm machine, the CBCT, the binocular vision camera and the like, the fracture part and the marker are placed in the working area of the three-dimensional positioning system, and the spatial position of the marker module in the system coordinate system is identified, so that the real-time spatial position of the marker in the coordinate system of the equipment is obtained, and the relative spatial position of the patient operation part and the identification module is obtained.

Referring to fig. 9, the utility model discloses an identification module relates to 2 coordinate systems when using, is CT coordinate system and the equipment system coordinate system who obtains spatial information respectively. Specifically, the bottom plate 3 is attached to the body surface of a patient or an auxiliary treatment jig, relative spatial position data of a surgical site of the patient and the identification module is obtained, the identification module is fixed with hard tissues of the surgical site by using the stylet 14 before surgery, the relative spatial position data of the surgical site and the identification module is collected during surgery, the position data before surgery and the position data during surgery are fused through a conversion relation, surgical site information is obtained, and surgical robots or navigation systems are guided to carry out surgery assistance.

Specifically, the spatial position of the identification module in the preoperative CT and the spatial position of the patient part in the preoperative CT are obtained by using the preoperative CT, and the spatial position of the identification module relative to the patient part in the preoperative CT is obtained through conversion. The real-time spatial position of the identification module in the operation is obtained by identifying the optical positioning mark (or other auxiliary optical positioning marks) on the identification module through spatial information acquisition equipment (a binocular vision camera) in the operation. And placing the operation part and the identification module in a working area of a three-dimensional positioning system, identifying the spatial position of the identification module in a system coordinate system, and acquiring the real-time spatial position of the identification module in the operation. The spatial information acquisition equipment comprises a C-arm machine, an O-arm machine, a CBCT or a binocular vision camera. The spatial position of the known preoperative marker module relative to the patient part is converted, so that the real-time spatial position of the patient part can be obtained through equipment for obtaining spatial information in the operation, and a robot or a navigation system is guided to carry out operation assistance.

The DICOM slice image of CT/MRI obtained before operation includes a patient operation site (i.e. a patient focus site) and a certain number (≧ 4) of identification balls 12 fixed on the identification module, and coordinate values P { P1, P2, P3, · PN } of the identification balls 12 in a DICOM image coordinate system (denoted as coordinate system 1) are calculated. Combining the data set Bc { B1c, B2c, B3c,., BNc } of the fractured bone in the CT coordinate system, knowing P and Bc, the spatial position T2 of the marker module relative to the patient part in the preoperative CT can be calculated by using the following formula: bc = T2 × P.

The real-time space pose An { A1, A2, A3,. And AN } of the identification module in the operation is obtained through space information obtaining equipment (a binocular vision system), and coordinate values Q { Q1, Q2, Q3,. And QN } of the identification ball 12 under the binocular vision system are calculated. Combining a real-time data set Bs { B1s, B2s, B3s,. And BNs } of the fractured bone under a binocular vision system, knowing P and Q, fitting an optimal transformation relation T1 between a CT coordinate system and a binocular vision system coordinate system by a least square method according to the following formula: q = T1 × P.

And finally, calculating the pose of each broken bone under the magnetic field coordinate system in real time by using the following formula, and rendering and displaying: bs = An × T1 × Bc. Therefore, abundant operation position information can be obtained through the fusion of the intraoperative data and the preoperative data, and the robot or the navigation system is guided to carry out operation assistance.

To sum up, the utility model discloses a medical sign module design has the mechanism of applying to can apply in the tool surface of skin surface or other adjunctie therapy. In addition, the marking module is also provided with a needle core, so that the function of puncturing skin and further positioning the needle core on hard tissues such as bones and the like can be realized by pressing the needle core. The needle core part adopts a built-in closed design, thereby achieving the aseptic process condition. The identification module can be used for an auxiliary method for image matching before operation under clinical conditions, the method can be used for installing a mark marker before operation of a patient and acquiring various abundant image data, so that the marker can be fused with data acquired in the operation, and the identification ball 12 is adopted as an auxiliary measure, so that the fusion difficulty of multi-mode information is greatly reduced.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. The utility model provides an identification module, includes identification component (1), identification component (1) includes support column (11) and identification ball (12), its characterized in that still includes base (2), the one end of base (2) has bottom plate (3), the one end of support column (11) has along axial extension and is adapted to connecting groove (111) of base (2) appearance.

2. The module according to claim 1, characterized in that the base (2) is cylindrical, with a clamping strip (21) on the side and a through hole (22) in the middle;

and a clamping groove (112) matched with the clamping strip (21) is arranged on the groove wall of the connecting groove (111).

3. A module according to claim 1, characterized in that the identification assembly (1) further comprises an identification plate (17), the side of the support column (11) being provided with a receiving slot (113) for receiving the identification plate (17).

4. A module according to claim 3, characterized in that the side of the supporting column (11) is provided with a mounting groove (114), and the identification ball (12) is arranged in the mounting groove (114);

a hole (171) corresponding to the mounting groove (114) is formed in the identification plate (17);

the identification plate (17) is also provided with an optical positioning mark which is a black and white grid or a two-dimensional code.

5. The module according to claim 1, characterized in that the base (2) and the bottom plate (3) are connected at a location provided with a positioning protrusion (a), and the end of the support column (11) is provided with a positioning slot (B) adapted to the positioning protrusion (a).

6. A module according to claim 1, characterized in that the identification assembly (1) further comprises a piston rod (13) and a needle core (14);

the piston rod (13) comprises a rod body (131) and a sliding head (132) positioned at one end of the rod body (131), and the stylet (14) is connected to the sliding head (132).

7. The module according to claim 6, characterized in that it further comprises a needle cylinder (20), said needle cylinder (20) having a first guide hole (115) and a second guide hole (116) extending axially therein;

the first guide hole (115), the second guide hole (116) and the connecting groove (111) are coaxially and sequentially arranged along the axial direction of the needle cylinder (20) and are communicated with one another.

8. The cartridge of claim 7, wherein the sliding head (132) is movably located in the first guiding hole (115), an end of the rod (131) remote from the sliding head (132) protrudes from the needle cylinder (20), and the core (14) is movably located in the second guiding hole (116);

a first spring (15) is sleeved on the rod body (131), and the first spring (15) is located in the first guide hole (115).

9. Module according to claim 7, characterized in that the identification assembly (1) further comprises a stop (16);

the blocking member (16) comprises an annular body (161), a button (162), a second spring (163) and a connecting body (164);

the button (162) and the second spring (163) are respectively connected to two sides of the outer edge of the annular body (161), and the button (162) is connected with the annular body (161) through the connecting body (164);

the annular body (161) is located in the first guide hole (115), the second spring (163) is also connected with the needle cylinder (20);

the side surface of the syringe (20) is provided with a through hole (117) and a receiving groove (118), the connecting body (164) is movably positioned in the through hole (117), and the button (162) can be pressed into the receiving groove (118);

-when the button (162) is not pressed, the annular body (161) is eccentric to the first guide hole (115);

the annular body (161) is coaxial with the first guide hole (115) upon pressing the button (162) into the receiving groove (118).

10. The set of claim 1, wherein the identification balls (12) are arranged non-coplanar in more than four, and any three of the identification balls (12) are non-collinear.

11. The module according to claim 1, characterized in that the base plate (3) is picc, the support pillar (11) is POM or PEEK, and the marker ball (12) is an aluminum alloy or a titanium alloy.

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