Puncture instrument auxiliary assembly

Abstract

The embodiment of the specification discloses a puncture instrument auxiliary assembly, which comprises a sleeve, the sleeve comprises a first block and a second block, the first block and the second block are oppositely arranged to form a first cavity; the sleeve is provided with a first clamping positioning structure; a guide part, the guide part comprises a first guide block and a second guide block, the first guide block and the second guide block are oppositely arranged to form a second cavity; the guide part comprises a second clamping positioning structure.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of puncture, in particular to a puncture instrument auxiliary assembly. BACKGROUND

[0002] In an interventional operation, if an operator directly controls a puncture instrument to perform puncture and insert the puncture instrument into a human body, the operator needs to perform puncture on a puncture site, which also causes the puncture site to be unable to be provided with an imaging device with a certain radiation to perform real-time imaging on a puncture position and a lesion position, so that the operator cannot obtain image assistance in real time during puncture, and the process of confirming whether puncture is in place through CT imaging and the like after puncture is repeatedly performed, so that the accuracy and fluency of puncture are limited. In order to improve the accuracy and safety of puncture in an interventional operation, a puncture device can be used to replace the operator to perform puncture on the puncture site, so that an imaging device can be provided on the puncture site to obtain image assistance in real time.

[0003] Therefore, it is necessary to provide a corresponding puncture instrument auxiliary assembly to fix different puncture instruments that can be used in an interventional operation to a puncture device, guide the puncture instruments through the auxiliary assembly, and position the puncture instruments, so as to ensure the accuracy and safety of puncture performed by the puncture device. SUMMARY

[0004] The present specification provides a puncture instrument auxiliary assembly, which comprises a sleeve, the sleeve comprising a first block and a second block, the first block and the second block being oppositely arranged to form a first cavity; the sleeve being provided with a first clamping positioning structure; a guide part, the guide part comprising a first guide block and a second guide block, the first guide block and the second guide block being oppositely arranged to form a second cavity; the guide part comprising a second clamping positioning structure.

[0005] In some embodiments, the first cavity comprises at least a non-circular cross section in a cross section perpendicular to the axis.

[0006] In some embodiments, the first cavity comprises a first sub-cavity, a second sub-cavity and a third sub-cavity arranged in sequence along the axis, wherein the inner diameter of the second sub-cavity is greater than the inner diameters of the first sub-cavity and the third sub-cavity.

[0007] In some embodiments, the first block comprises a first pin hole, and the second block comprises a first clamping pin, the first clamping pin being capable of being inserted into the first pin hole to form a fit.

[0008] In some embodiments, the first clamping positioning structure is a positioning groove opened on the outer wall of the sleeve.

[0009] In some embodiments, the positioning groove is an annular groove arranged circumferentially along the sleeve.

[0010] In some embodiments, the positioning groove is a groove arranged on the outer wall of the first block or the second block.

[0011] In some embodiments, a first marker is arranged on the sleeve at a position radially opposite to the groove.

[0012] In some embodiments, the guide portion comprises a plug structure; wherein the area of the plug structure along a section perpendicular to the axis gradually decreases from top to bottom.

[0013] In some embodiments, an auxiliary needle head is connected to the end of the plug structure.

[0014] In some embodiments, the first guide block comprises a second pin hole, and the second guide block comprises a second bayonet, which can be inserted into the second pin hole to form a fit.

[0015] In some embodiments, the outer side surface of the guide portion comprises an abutting surface, which is arranged as a plane.

[0016] In some embodiments, a second marker is arranged on the guide portion.

[0017] In some embodiments, the first guide block comprises a first handle, and the second guide block comprises a second handle. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further illustrated in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, the same reference numbers represent the same structures, wherein:

[0019] Figure 1 is a structural schematic diagram of a puncture instrument according to some embodiments of the present application;

[0020] Figure 2 is a structural schematic diagram of a puncture device according to some embodiments of the present application;

[0021] Figure 3 is an exploded schematic diagram of an auxiliary assembly of a puncture instrument according to some embodiments of the present application;

[0022] Figure 4 is a structural schematic diagram of a sleeve and a puncture instrument before assembly according to some embodiments of the present application;

[0023] Figure 5 is a structural schematic diagram of a sleeve and a puncture instrument before assembly according to some embodiments of the present application;

[0024] Figure 6 is a structure schematic diagram of a sleeve and a puncture instrument assembled according to some embodiments of the present specification;

[0025] Figure 7 is a structure schematic diagram of a sleeve and a puncture instrument assembled according to some embodiments of the present specification;

[0026] Figure 8 is a structure schematic diagram of a guide part and a puncture instrument before assembled according to some embodiments of the present specification;

[0027] Figure 9 is a structure schematic diagram of a guide part and a puncture instrument before assembled according to some embodiments of the present specification;

[0028] Figure 10 is a structure schematic diagram of a guide part according to some embodiments of the present specification;

[0029] Figure 11 is an assembly schematic diagram when installing a sleeve according to some embodiments of the present specification;

[0030] Figure 12 is an assembly schematic diagram when installing a guide part according to some embodiments of the present specification;

[0031] Figure 13 is a structure schematic diagram of a puncture instrument fixed to a puncture device by a puncture instrument auxiliary assembly according to some embodiments of the present specification. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can also be applied to other similar scenarios without creative labor. Unless it is obvious from the language environment or otherwise stated, the same reference numbers in the drawings represent the same structure or operation.

[0033] In an interventional procedure (or puncture procedure), a puncture device is used to insert a puncture instrument into a human body for puncture without an operator being present at a puncture site, so that the puncture site can be provided with an imaging device with radiation to obtain real-time image assistance (for example, to obtain real-time puncture position and lesion position). The operator can be outside the puncture site to control the puncture device to perform puncture based on the real-time image assistance, which can improve the accuracy, fluency and safety of the puncture procedure, and enable the puncture procedure to be performed remotely. Accordingly, in order to ensure the accuracy of the puncture procedure, a corresponding auxiliary assembly (or adapter) is needed to guide the puncture instrument during the puncture procedure. In some embodiments, the auxiliary assembly can include a channel with a certain length, the puncture instrument is located in the channel and can move in the channel, and the puncture instrument can be inserted into the human body for puncture under the guidance of the channel. However, since the channel of the auxiliary assembly only plays a guiding role for the puncture instrument, that is, only limits the direction of the puncture instrument, it cannot provide puncture power to the puncture instrument, and thus cannot position the axial position of the puncture instrument (for example, the depth of the puncture instrument inserted into the human body). In some embodiments, when fixing a plurality of different puncture instruments that can be used in the interventional procedure to the puncture device, since different puncture instruments are difficult to be clamped and fixed, in order to ensure that the puncture device can provide puncture power to the puncture instrument, the auxiliary assembly can include a baffle, the baffle can abut against the top of the puncture instrument, and then the puncture device can push the puncture instrument to insert into the human body for puncture by controlling the movement of the baffle. However, this can only ensure that the puncture device transmits unidirectional power to the puncture instrument to push the puncture instrument to move forward in the puncture direction, and the puncture instrument cannot retreat and then move forward to adjust the puncture trajectory, which limits the accuracy and convenience of puncture.

[0034] To solve the above problems, the embodiments of the present specification provide a puncture instrument auxiliary assembly, which not only has a guide portion that can be used to guide the puncture instrument, but also has a sleeve that can be used to fix the puncture instrument to the puncture device, so that the puncture device can insert or withdraw the puncture instrument into or from the human body to complete the puncture. As an exemplary illustration, the puncture instrument auxiliary assembly provided by the embodiments of the present specification can fix the puncture instrument 100 as shown in Figure 1 to the puncture device 200 as shown in Figure 2 .

[0035] In order to better describe the puncture instrument auxiliary assembly provided by the embodiments of the present specification, the puncture instrument 100 as shown in Figure 1 and the puncture device 200 as shown in Figure 2 will be introduced first.

[0036] As shown in Figure 1As shown, the puncture instrument 100 may be a puncture trocar. The puncture instrument 100 may include a needle cap 110, a needle handle 120, and an outer needle 130. The cross-sectional dimension of the needle handle 120 is greater than the diameter of the outer needle 130. In some embodiments, the cross-sectional dimension of the needle handle 120 may be the cross-sectional dimension of the needle handle 120 along an axis perpendicular to the outer needle 130. In some embodiments, when the needle handle 120 is shaped like a cube, the cross-sectional dimension of the needle handle 120 is rectangular, and the cross-sectional dimension may be the length, width, or diagonal length of the rectangle. In some embodiments, when the needle handle 120 is shaped like a sphere, the cross-sectional dimension of the needle handle 120 is circular, and the cross-sectional dimension may be the diameter of the circle. In some embodiments, when the needle handle 120 is irregularly shaped, the cross-sectional dimension of the needle handle 120 greater than the diameter of the outer needle 130 may be the smallest cross-sectional dimension of the needle handle 120 greater than the diameter of the outer needle 130. In some embodiments, when the cross-section of the needle handle 120 is irregular, the cross-sectional dimension may be the diameter of an equivalent circle (e.g., an inscribed circle or a circumscribed circle) of the irregular shape. In some embodiments, the outer needle 130 houses an inner needle, one end of which is connected to the needle cap 110.

[0037] like Figure 2 As shown, the puncture device 200 may include a base 210 and, from top to bottom, a first clamping assembly 220 and a second clamping assembly 230. The first clamping assembly 220 may include a sleeve mounting groove 221, a first clamping claw 222, and a slider 223; the second clamping assembly 230 may include a guide mounting groove 231 and a second clamping claw 232. The sleeve mounting groove 221 and the first clamping claw 222 are disposed on the slider 223, which is slidably disposed on the base 210, while the guide mounting groove 231 and the second clamping claw 232 are disposed on the base 210. For example, the first clamping claw 222 may be fixedly connected to the slider 223, the sleeve mounting groove 221 may be directly formed on the slider 223 or fixedly connected to the slider 223; the second clamping claw 232 may be fixedly connected to the base 210, and the guide mounting groove 231 may be directly formed on the base 210 or fixedly connected to the base 210. The slider 223 can move linearly relative to the base 210 based on control commands received by the puncture device 200. The base 210 is also provided with an operating mechanism 212, which can control the opening and closing of the first clamping jaw 222 and the second clamping jaw 232. In some embodiments, the operating mechanism 212 can control the synchronous opening or closing of the first clamping jaw 222 and the second clamping jaw 232. In some embodiments, the operating mechanism 212 can control the independent opening or closing of the first clamping jaw 222 and the second clamping jaw 232. In some embodiments, the operating mechanism 212 can control the opening or closing of the first clamping jaw 222 and the second clamping jaw 232 through mechanical transmission or motor drive.

[0038] The puncture instrument auxiliary assembly provided by the embodiments of the present application can include a sleeve and a guide part. The sleeve includes a first block and a second block, which can be oppositely arranged to form a first cavity; the sleeve includes a first clamping positioning structure; the guide part can include a first guide block and a second guide block, which can be oppositely arranged to form a second cavity; the guide part includes a second clamping positioning structure. Specifically, the first block and the second block can be assembled to the needle handle 120, so that the needle handle 120 is accommodated in the first cavity and cannot slide in the first cavity; the first guide block and the second guide block can be assembled to a part of the outer needle 130, so that the part of the outer needle 130 is accommodated in the second cavity and can slide in the second cavity. After the assembly of the puncture instrument 100 and the puncture instrument auxiliary assembly provided by the embodiments of the present application is completed, the sleeve can be installed to the sleeve installation slot 221 and the first clamping positioning structure on the sleeve is clamped by the first clamping jaw 222, and the guide part can be installed to the guide part installation slot 231 and the second clamping positioning structure on the guide part is clamped by the second clamping jaw 232, so that the puncture instrument 100 is fixed to the puncture device 200 through the puncture instrument auxiliary assembly provided by the embodiments of the present application. During puncture, the puncture device 200 can control the slider 223 to slide based on the received control instruction, so as to drive the puncture instrument 100 to move up and down in a straight line, so as to puncture. The puncture instrument 100 is fixed to the puncture device 200 through the puncture instrument auxiliary assembly provided by the embodiments of the present application, and the puncture instrument 100 is guided when the puncture device 200 inserts the puncture instrument 100 into the human body, so that accurate positioning of the puncture instrument 100 can be realized during puncture, and the puncture precision is improved. The sleeve and the guide part in the puncture instrument auxiliary assembly provided by the embodiments of the present application can be split in half along the axial direction thereof, so as to facilitate assembly and disassembly with the puncture instrument 100, and after splitting, the first cavity and the second cavity are also split in half along the axial direction thereof, so that the inner walls of the first cavity and the second cavity can be fully sterilized, and the puncture instrument auxiliary assembly after sterilization can be repeatedly used. In addition, the first clamping positioning structure on the sleeve and the second clamping positioning structure on the guide part in the puncture instrument auxiliary assembly provided by the embodiments of the present application can be clamped by the first clamping jaw 232 and the second clamping jaw 232 on the puncture device 200, respectively, and the puncture instrument auxiliary assembly and the puncture device 200 can be quickly disassembled by controlling the opening and closing of the first clamping jaw 222 and the second clamping jaw 232, so as to facilitate use and operation of the operator. It should be noted that, Figure 1 the puncture instrument 100 and the puncture device 200 shown in the figures are only examples of the puncture instrument and the puncture device, and the puncture instrument and the puncture device are not limited to the puncture instrument 100 and the puncture device 200 shown in the figures, Figure 2The puncture device 200 shown is only an exemplary description and is not intended to limit the puncture instrument auxiliary assembly in the present specification. The puncture instrument auxiliary assembly provided by the embodiments of the present specification can also be applied to fix other puncture instruments to other puncture devices. When any puncture instrument is fixed to any puncture device, the puncture instrument auxiliary assembly provided by the embodiments of the present specification or a similar technical solution similar to the puncture instrument auxiliary assembly provided by the embodiments of the present specification should be within the protection scope of the present specification.

[0039] The puncture instrument auxiliary assembly provided by the present specification will be described in detail below with reference to the accompanying drawings.

[0040] Figure 3 is an exploded schematic view of the puncture instrument auxiliary assembly according to some embodiments of the present specification.

[0041] As shown in Figure 3 , the puncture instrument auxiliary assembly 300 can include a sleeve 310 and a guide part 320. The sleeve 310 can include a first block 311 and a second block 312, which can be oppositely arranged to form a first cavity. The sleeve 310 can be provided with a first clamping positioning structure 313. The guide part 320 can include a first guide block 321 and a second guide block 322, which can be oppositely arranged to form a second cavity. The guide part 320 can be provided with a second clamping positioning structure.

[0042] In some embodiments, the material of the puncture instrument auxiliary assembly 300 can be aluminum alloy. Further, the surface of the puncture instrument auxiliary assembly 300 can be anodized. By such arrangement, the puncture instrument auxiliary assembly 300 can have good biocompatibility and will not cause infection risk after contacting the wound surface after sterilization.

[0043] Figure 4 and Figure 5 is a structural schematic view of the sleeve and the puncture instrument before assembly according to some embodiments of the present specification.

[0044] In combination with Figure 3 , Figure 4 and Figure 5As shown, the first block 311 and the second block 312 can be assembled to the needle handle 120 so that the needle handle 120 is located within the first cavity. Specifically, the sleeve 310 can be assembled from the first block 311 and the second block 312. The first block 311 can be provided with a first groove 3111, and the second block 312 can be provided with a second groove 3121. When the first block 311 and the second block 312 are assembled to the needle handle 120, the first groove 3111 and the second groove 3121 can be arranged relative to each other to form a first cavity, thereby sleeve 310 on the needle handle 120. In some embodiments, the spatial shape of the first cavity is adapted to the shape of the needle handle 120 to increase the reliability of the assembly between the sleeve 310 and the needle handle 120, avoid relative sliding or loosening of the sleeve 310 on the needle handle 120, facilitate axial positioning of the puncture instrument during the puncture process, and ensure that the puncture instrument can move forward or backward along the puncture direction when the puncture device provides bidirectional axial puncture power, thereby facilitating the puncture trajectory of the puncture instrument and improving the accuracy and convenience of puncture. Figure 4 and Figure 5 As shown, needle handle 120 is composed of a cylindrical body, a square body, and a cylindrical body along its axis. Correspondingly, the spatial shape of the first cavity formed by the opposing arrangement of first groove 3111 and second groove 3121 also includes a cylindrical body, a square body, and a cylindrical body of the same or substantially the same size along its axis. In some embodiments, because needle handles of different types or specifications of puncture instruments have different shapes or sizes, the spatial shape of the first cavity can be adjusted to accommodate needle handles of different types or specifications of puncture instruments.

[0045] In some embodiments, after the sleeve 310 is mounted on the needle handle 120, the needle cap 110 is exposed outside the sleeve 310 and is located above the sleeve 310. During puncture, the operator can use the needle cap 110 to pull the inner needle out of the outer needle 130 to perform subsequent surgical operations. For example, after the puncture instrument 100 is punctured to a designated location, the inner needle can be automatically pulled out from the needle channel in the outer needle 130 by the operator holding the needle cap 110 or by a robotic arm holding the needle cap 110. At this time, the needle channel of the outer needle 130 becomes a channel connecting the target tissue and the body surface. The operator (e.g., a doctor) can use this channel to directly deliver the biopsy instrument to the designated location to perform a biopsy operation.

[0046] In some embodiments, the first cavity may include at least a non-circular cross-section along a cross-section perpendicular to the axis. Figure 4 and Figure 5As shown, the spatial shape of the first cavity formed by the relative arrangement of the first groove 3111 and the second groove 3121 is a square body along its axial direction, and the cross-section of the square body along the perpendicular axis is a rectangular cross-section, rather than a circular cross-section. By ensuring that the cross-section of the first cavity along the perpendicular axis includes at least a non-circular cross-section, the relative rotation between the sleeve 310 and the needle handle 120 can be effectively limited after the sleeve 310 is installed on the needle handle 120, thereby preventing the rotation direction of the puncture device 100 (or the orientation of the outer needle 130) from changing during the puncture process, thereby improving the puncture accuracy. In some embodiments, the shape of the non-circular cross-section can include regular or irregular shapes such as triangles, rectangles, regular pentagons, and regular hexagons.

[0047] In some embodiments, the first cavity may include a first sub-cavity, a second sub-cavity, and a third sub-cavity arranged in sequence along the axis direction. Wherein, the inner diameter of the second sub-cavity is greater than the inner diameters of the first sub-cavity and the third sub-cavity. In some embodiments, when the first sub-cavity, the second sub-cavity, and the third sub-cavity are circular cross-sections along a cross-section perpendicular to the axis, the inner diameters of the first sub-cavity, the second sub-cavity, and the third sub-cavity may be the diameters of the corresponding circular cross-sections. In some embodiments, when the first sub-cavity, the second sub-cavity, and the third sub-cavity are non-circular cross-sections (e.g., triangles, rectangles, pentagons, hexagons, etc.) along a cross-section perpendicular to the axis, the inner diameters of the first sub-cavity, the second sub-cavity, and the third sub-cavity may be the diameters of the equivalent circles of the corresponding non-circular cross-sections. In some embodiments, the equivalent circle of the non-circular cross-section may refer to the circumscribed circle, inscribed circle, etc. of the non-circular cross-section shape. For example, when the shape of the non-circular cross-section is a triangle, its equivalent circle may be the circumscribed circle or inscribed circle of the triangle. By such an arrangement, when the needle handle 120 is located in the second sub-cavity, the needle handle 120 can be effectively restricted from moving in the second sub-cavity along the axial direction of the second sub-cavity, that is, no relative displacement will occur between the puncture instrument 100 and the sleeve 310 in the axial direction of the second sub-cavity, thereby ensuring that the axial (i.e., the axial direction of the puncture instrument 100 or the sleeve 310) puncture power provided by the puncture device 200 can be transmitted to the puncture instrument 100 through the sleeve 310, so that the puncture instrument 100 can move along its axial direction for puncture.

[0048] In some embodiments, combined Figure 4 and Figure 5As shown, the first block 311 can include a first pin hole 3112, and the second block 312 can include a first snap pin 3122. The first snap pin 3122 can be inserted into the first pin hole 3112 to form a fit, thereby assembling the first block 311 and the second block 312 into the sleeve 310. The insertion fit of the first snap pin 3122 and the first pin hole 3112 can make it difficult for the sleeve 310 to disassemble (i.e., the first block 311 and the second block 312 separate) when the sleeve 310 is mounted on the needle handle 120, thereby avoiding the sleeve 310 from detaching from the needle handle 120 by itself. After the puncture is completed, the operator can easily separate the first block 311 and the second block 312, and disassemble the sleeve 310 from the needle handle 120. In addition, since the first cavity is prone to accumulate or breed bacteria, separating the first block 311 and the second block 312 facilitates the operator to fully sterilize the first groove 3111 and the second groove 3121, so that the sleeve 310 can be reused after sterilization. In some embodiments, the first pin hole 3112 can be a groove structure provided on the surface of the first block 311 opposite to the second block 312. Correspondingly, the first snap pin can be a protrusion structure provided on the surface of the second block 312 opposite to the first block 311 and adapted to the groove structure. In some embodiments, the size of the protrusion structure can be slightly larger than the size of the groove structure, so that the protrusion structure and the groove structure can form a relatively tight insertion fit to improve the structural reliability of the first block 311 and the second block 312 assembled into the sleeve 310, while ensuring that the operator can easily and quickly disassemble the sleeve 310 into the first block 311 and the second block 312. In some embodiments, the shape of the protrusion structure can be a regular or irregular shape such as a square body or a cylindrical body. In some embodiments, the first block 311 and the second block 312 can also be assembled into the sleeve 310 by screw connection. As an exemplary illustration, the first block 311 and the second block 312 are provided with through holes at the same position, and the operator can pass a screw of a corresponding size through the through holes on the first block 311 and the second block 312, and then tighten the nut to assemble the first block 311 and the second block 312 into the sleeve 310.

[0049] In some embodiments, in combination with Figures 2-5As shown, when the puncture instrument is fixed to the puncture device 200, the sleeve 310 can be installed into the sleeve installation groove 221, the first clamping jaw 222 can clamp the first clamping positioning structure 313 on the sleeve 310, so as to install the sleeve 310 to the puncture device 200, and the position of the sleeve 310 can be changed along with the sliding of the slider 223 (i.e. linear motion relative to the base 210). In some embodiments, the outer contour of the sleeve 310 can be matched with the sleeve installation groove 221, for example, the outer contour of the sleeve 310 is arc, and the sleeve installation groove 221 is an arc installation groove matched with the arc, so that the sleeve 310 can be tightly and reliably installed into the sleeve installation groove 221, and the risk of the sleeve 310 being detached from or shaking in the sleeve installation groove 221 can be reduced. By clamping the first clamping positioning structure 313 by the first clamping jaw 222, not only the sleeve 310 can be pressed into the sleeve installation groove 221, but also it can be ensured that when the slider 223 slides during the puncture process, the slider 223 can drive the sleeve to move up and down through the first clamping jaw 222 and the sleeve installation groove 221, so as to drive the puncture instrument (for example, the puncture instrument 100) to move in the puncture direction to perform the puncture.

[0050] In some embodiments, the first clamping positioning structure 313 can be a positioning groove opened on the outer wall of the sleeve 310. In some embodiments, the positioning structure 224 matched with the positioning groove can be arranged on the sleeve installation groove 221, and by making the positioning structure 224 clamped into the positioning groove, the installation position of the sleeve 310 in the sleeve installation groove 221 can be determined and whether it is installed in place can be confirmed. In some embodiments, the positioning structure 224 matched with the positioning groove can also be arranged on the first clamping jaw 222, and by the cooperation of the positioning structure and the positioning groove, it can be ensured that the first clamping jaw 222 can better clamp the sleeve 310. In some embodiments, as shown in Figure 4 and Figure 5 As shown, the positioning groove can be an annular groove arranged along the circumference of the sleeve 310. Specifically, the outer wall of the first block 311 and the second block 312 are both opened with a semi-annular groove, and when the first block 311 and the second block 312 are assembled to form the sleeve 310, the two semi-annular grooves can form an annular groove. By setting the first clamping positioning structure 313 as an annular groove, the sleeve 310 can be installed into the sleeve installation groove 221 at any angle (for example, any angle of rotation around its own axis).

[0051] Figure 6 and Figure 7 are structural schematic diagrams of the sleeve and the puncture instrument after being assembled according to some embodiments shown in the present specification.

[0052] In some embodiments, as shown in Figure 6 and Figure 7As shown, the positioning groove can be a groove 3131 provided on the outer wall of the first block 311 or the second block 312. In some embodiments, the two opposite sides of the groove 3131 are parallel to each other, and the two opposite upper and lower sides are inclined planes (for example, the cross-sectional shape of the groove 3131 parallel to the axis of the sleeve 310 is trapezoidal, V-shaped, etc.). When the positioning structure 224 (for example, a protrusion matched with the groove 3131) on the sleeve mounting groove 221 is clamped into the groove 3131, the rotation direction of the puncture instrument is the correct direction in the puncture treatment. The design of the groove can effectively limit the rotation of the sleeve 310, thereby ensuring that the rotation direction of the puncture instrument does not change, preventing the change of the rotation direction of the puncture instrument from affecting the puncture, for example, affecting the puncture accuracy.

[0053] In some embodiments, as shown in FIG. 3, the sleeve 310 can be provided with a first marker 314 at a position radially opposite to the groove 3131. Figure 6 and as shown in FIG. 3, the sleeve 310 can be provided with a first marker 314 at a position radially opposite to the groove 3131. Figure 7 As shown, the positioning groove can be a groove 3131 provided on the outer wall of the first block 311 or the second block 312. In some embodiments, the two opposite sides of the groove 3131 are parallel to each other, and the two opposite upper and lower sides are inclined planes (for example, the cross-sectional shape of the groove 3131 parallel to the axis of the sleeve 310 is trapezoidal, V-shaped, etc.). When the positioning structure 224 (for example, a protrusion matched with the groove 3131) on the sleeve mounting groove 221 is clamped into the groove 3131, the rotation direction of the puncture instrument is the correct direction in the puncture treatment. The design of the groove can effectively limit the rotation of the sleeve 310, thereby ensuring that the rotation direction of the puncture instrument does not change, preventing the change of the rotation direction of the puncture instrument from affecting the puncture, for example, affecting the puncture accuracy.

[0054] Figure 8 and Figure 9This is a schematic diagram of the structure of the guide part and the puncture instrument before assembly according to some embodiments of this specification.

[0055] Combine Figure 3 、 Figure 8 as well as Figure 9 As shown, the first guide block 321 and the second guide block 322 can be assembled into a guide portion 320. Specifically, the first guide block 321 can be provided with a first tubular groove 3211, and the second guide block 322 can be provided with a second tubular groove 3221. When the first guide block 321 and the second guide block 322 are assembled into the guide portion, the first tubular groove 3211 and the second tubular groove 3221 can be arranged relative to each other to form a second cavity, through which the outer needle 130 can pass and move. In some embodiments, the cross-section of the second cavity perpendicular to the axis can be circular, and the diameter of the circular cross-section can correspond to the diameter of the outer needle 130, so that the outer needle 130 in the second cavity can only advance or retreat along the axis of the second cavity, thereby guiding the puncture instrument. In some embodiments, a series of guide portions 320 can be provided according to the specifications of the puncture instrument to be installed, wherein the second cavity diameter of each guide portion 320 varies to accommodate the different outer needle diameters of the different specifications of the puncture instruments.

[0056] In some embodiments, combined Figure 8 and Figure 9As shown, the first guide block 321 can include a second pin hole 3212, and the second guide block 322 can include a second bayonet 3222. The second bayonet 3222 can be inserted into the second pin hole 3212 to form a fit, thereby assembling the first guide block 321 and the second guide block 322 into the guide portion 320. The structure of the second pin hole 3212 and the second bayonet 3222 can be similar to that of the first pin hole 3112 and the first bayonet 3122. For more information about how the second pin hole 3212 and the second bayonet 3222 and the first guide block 321 and the second guide block 322 are assembled into the guide portion 320, please refer to the relevant description of how the first pin hole 3112 and the first bayonet 3122 and the first block 311 and the second block 312 are assembled into the guide portion 320, which will not be repeated here. Since the outer needle 130 is inserted into the human body through the second cavity, in order to avoid the outer needle 130 being contaminated and causing infection of the patient, the second cavity needs to be sterilized frequently. By separating the first guide block 321 and the second guide block 322, the operator can easily sterilize the first pipe groove 3211 and the second pipe groove 3221, thereby being able to fully sterilize the second cavity, which also facilitates the repeated use of the guide portion 320 after sterilization. In some embodiments, the first guide block 321 and the second guide block 322 can be of an integrated structure, i.e., the guide portion 320 is an integral structure that cannot be disassembled. The second cavity can be a channel formed in the guide portion 320, which can pass through the outer needle 130 and move along the axial direction of the channel.

[0057] In some embodiments, as shown in Figure 2 , Figure 3 , Figure 8 and Figure 9 , when the puncture instrument is fixed to the puncture device 200, the guide portion 320 can be installed into the guide portion mounting groove 231, and the second clamping jaw 232 can clamp the second clamping positioning structure 323 on the guide portion 320, thereby installing the guide portion 320 to the puncture device 200 and fixing the position of the guide portion 320 on the puncture device 200. In some embodiments, the contact surface of the guide portion mounting groove 231 and the guide portion 320 can be a plane, which can limit the rotation of the guide portion 320. In some embodiments, the second clamping positioning structure 323 can be a positioning groove formed in the outer wall of the guide portion 320. In some embodiments, as shown in Figure 2 , the second clamping jaw 232 is provided with a positioning structure 233 that cooperates with the positioning groove. By allowing the positioning structure 233 to be inserted into the positioning groove, the second clamping jaw 232 can better clamp the guide portion 320, effectively limiting the axial movement of the guide portion 320 in the second clamping jaw 232. In some embodiments, the positioning groove can be an annular groove arranged circumferentially along the guide portion 320.

[0058] In some embodiments, as Figure 8 and Figure 9 As shown, the guide portion 320 may include a plug-in structure 324. The area of ​​the plug-in structure 324 along a cross section perpendicular to the axis (the axis of the second cavity) gradually decreases from top to bottom (i.e., from the needle cap to the needle tip). For example, the plug-in structure 324 may be wedge-shaped, conical, or the like. This arrangement facilitates inserting the guide portion 320 from above into the guide portion mounting groove 231 when installing the guide portion 320 into the guide portion mounting groove 231, positioning the guide portion 320 between the second clamping claws 232 and being clamped by the second clamping claws 232. This allows the guide portion 320 to be better clamped by the second clamping claws 232, thereby securely mounting the guide portion 320 in the guide portion mounting groove 231.

[0059] Figure 10 It is a schematic structural diagram of the guide portion according to some embodiments of this specification.

[0060] In some embodiments, as Figure 10 As shown, the end of the plug structure 324 can be connected to an auxiliary needle 325, which has a certain extension length and a sharp front end. In some embodiments, the auxiliary needle 325 can be formed by the first guide block 321 and the second guide block 322 being arranged relative to each other. Specifically, the first guide block 321 and the second guide block 322 are respectively provided with an auxiliary needle with a semicircular cross-section. When the first guide block 321 and the second guide block 322 are assembled into the guide portion 320, the auxiliary needles with semicircular cross-sections on the first guide block 321 and the second guide block 322 can form a complete auxiliary needle 325. By setting up the auxiliary needle 325, before using the puncture instrument for puncture, the puncture device 200 can be operated to move toward the patient's puncture site, and the auxiliary needle 325 can be used to break the skin at the patient's puncture site. This can avoid the situation where the skin is difficult to puncture and the puncture instrument directly punctures the skin, causing bending and deformation, thereby ensuring that the puncture instrument can smoothly reach the target position. In addition, since the deformation of the puncture instrument is reduced, it is beneficial to improve the puncture accuracy.

[0061] In some embodiments, combined Figure 2 、 Figure 8 、 Figure 9 and Figure 10As shown, the outer side surface of the guide portion 320 may include an abutment surface 326, which may be configured as a flat surface. When the guide portion 320 is installed in the guide portion mounting groove 231 and clamped by the second clamping claw 232, the abutment surface 326 may abut against the bottom surface 2311 of the guide portion mounting groove 231. By configuring the abutment surface 326 as a flat surface, the abutment surface 326 and the bottom surface 2311 of the guide portion mounting groove 231 can be fully abutted, thereby effectively limiting the rotation of the guide portion 320 and improving the puncture accuracy.

[0062] In some embodiments, as Figure 10 As shown, the guide portion 320 may be provided with a second marker 327. In some embodiments, the second marker 327 may be provided on a side of the guide portion 320 opposite the abutment surface 326. In some embodiments, the line connecting the center of the first marker 314 to the center of the second marker 327 may be parallel to the axis of the puncture instrument. In some embodiments, the second marker 327 and the first marker 314 can be tracked and identified by the same optical tracking device. In some embodiments, the puncture depth of the puncture instrument can be determined in real time by identifying the first marker 314 and the second marker 327 using the optical tracking device. In some embodiments, during the puncture process, the change in the distance between the first marker 314 and the second marker 327 is the puncture depth of the puncture instrument. In some embodiments, the axis direction of the puncture instrument (outer needle) can be determined in real time by identifying the first marker 314 and the second marker 327 using an optical device, thereby preventing the puncture instrument (outer needle) from deviating from the predetermined puncture direction. Specifically, during the puncture process, the axis direction of the puncture instrument can be determined based on the line connecting the center of the first marker 314 to the center of the second marker 327. Furthermore, real-time acquisition of the puncture depth and axial direction of the puncture instrument during the puncture process helps improve puncture accuracy. In this embodiment, by positioning the second marker 327 on the guide portion 320 opposite the abutment surface 326, the position of the second marker 327 can be determined when the guide portion 320 is installed in the guide portion mounting groove 231 and clamped by the second clamping claw 232. This ensures that the second marker 327 is not obscured by the guide portion mounting groove 231 and / or the second clamping claw 232, thereby facilitating better identification of the second marker 327 by the optical tracking device. Furthermore, by constraining the rotation of the guide portion 320 by providing the abutment surface 326 as a plane, changes in the orientation of the second marker 327 can be prevented from affecting puncture accuracy. For example, if the orientation of the second marker 327 changes during the puncture process, the puncture depth and direction determined by the optical tracking device based on the identification of the first marker 314 and the second marker 327 will be deviated.

[0063] In some embodiments, as Figure 10As shown, the first guide block 321 can include a first handle 3213, and the second guide block 322 can include a second handle 3223, which can facilitate the operator to grasp and exert force, thereby facilitating the disassembly of the guide part 320 into the first guide block 321 and the second guide block 322 before or after the operation.

[0064] The following will describe in detail how the puncture instrument auxiliary assembly 300 provided by the embodiments of the present specification fixes the puncture instrument 100 to the puncture device 200 to perform the puncture operation in combination with the accompanying drawings.

[0065] When fixing the puncture instrument 100 to the puncture device 200 through the puncture instrument auxiliary assembly, first, the assembly of the sleeve 310 and the guide part 320 to the puncture instrument 100 needs to be completed, that is, the sleeve 310 is assembled to the needle handle 120, and the outer needle 130 is passed through the second cavity of the guide part 320. Next, the puncture instrument 100 can be fixed to the puncture device 200 in the order of Figure 11 and Figure 12 as shown in the assembly process.

[0066] Figure 11 is an assembly schematic diagram when installing the sleeve according to some embodiments of the present specification. Figure 12 is an assembly schematic diagram when installing the guide part according to some embodiments of the present specification.

[0067] As shown in Figure 11 , the sleeve 310 is placed in the sleeve installation slot 221, and the first clamping positioning structure 313 (positioning slot) is aligned with the positioning structure on the sleeve installation slot 221 or the first clamping jaw 222, and then the first clamping jaw 222 is controlled to close using the operating mechanism 212, at this time the guide part 320 is located between the sleeve 310 and the guide part installation slot 231 (or the second clamping jaw 232), and can slide on the outer needle 130 of the puncture instrument 100. Among them, the plug-in structure 324 of the guide part 320 faces the guide part installation slot (or the second clamping jaw 232).

[0068] As shown in Figure 12As shown, in some embodiments, the operating mechanism 212 can synchronously control the first clamping jaw 222 and the second clamping jaw 232 to open and close, so when the first clamping jaw 222 is closed, the second clamping jaw 232 is also in a closed state. Therefore, in order to be able to clamp the guide part 320 between the second clamping jaw 232 when the second clamping jaw 232 is in a closed state, after the installation of the sleeve 310 is completed, the guide part 320 can be slid downward, and after the insertion structure 324 contacts the second clamping jaw 232 at one end of the second clamping jaw 232, the guide part 320 can be squeezed into the second clamping jaw 232 by pushing the guide part 320 with force, since the area of the cross section of the insertion structure 324 perpendicular to the axis gradually decreases from top to bottom. When the second clamping positioning structure 323 (positioning groove) is aligned with the guide part mounting groove 231 or the positioning structure on the second clamping jaw 232, the installation of the guide part 320 is completed. In some embodiments, the operating mechanism 212 can also separately control the first clamping jaw 222 and the second clamping jaw 232, at this time, the second clamping positioning structure 323 (positioning groove) can be directly aligned with the guide part mounting groove 231 or the positioning structure on the second clamping jaw 232, and then the second clamping jaw 232 is closed by the operating mechanism 212 to clamp the guide part 320, thereby completing the installation of the guide part 320. After the installation of the sleeve 310 and the guide part 320 is completed, the fixation of the puncture instrument 100 to the puncture device 200 by the puncture instrument auxiliary assembly 300 is also completed.

[0069] Figure 13 is a structure schematic diagram of fixing the puncture instrument to the puncture device by the puncture instrument auxiliary assembly according to some embodiments of the present specification.

[0070] As Figure 13 shown, the sleeve 310 is installed between the first clamping jaw 222 and the sleeve mounting groove 221, the guide part 320 is installed between the second clamping jaw 232 and the guide part mounting groove 231, and the outer needle 130 of the puncture instrument 100 passes through the second cavity of the guide part 320. The sleeve 310 can move up and down relative to the puncture device 200 (base 210) by sliding the slider 223, and the puncture instrument 100 also moves up and down under the driving of the sleeve 310, wherein the second cavity of the guide part 320 can guide the puncture direction of the puncture instrument 100, that is, the puncture instrument 100 moves relative to the guide part 320 along the axis direction of the second cavity.

[0071] The beneficial effects that the embodiments of the present specification can bring include but are not limited to: (1) the puncture instrument auxiliary assembly provided by the embodiments of the present specification fixes the puncture instrument to the puncture device through the sleeve, and the guide part guides the puncture direction of the puncture instrument, which facilitates the positioning of the puncture instrument and helps to improve the puncture precision; (2) the first marker on the sleeve and the second marker on the guide part are identified by the optical tracking device, which can accurately determine the position and axis direction of the puncture instrument, and can better improve the puncture precision; (3) the sleeve can be split into a first block and a second block, and the guide part can be split into a first guide block and a second guide block, which facilitates installation and postoperative splitting; (4) after splitting the sleeve and the guide part, the first cavity and the second cavity are also split, which facilitates the sterilization treatment of the first cavity and the second cavity, so that the puncture instrument auxiliary assembly can be reused after sterilization; (5) different specifications or types of puncture instruments can be fixed to the same puncture device by adjusting the shape and size of the first cavity and / or the second cavity; (6) the puncture instrument auxiliary assembly provided by the embodiments of the present specification has good biocompatibility, and after sterilization treatment, there is no risk of infection when contacting the wound surface; (7) the sleeve and the guide part in the puncture instrument auxiliary assembly are installed on the puncture device through the clamping jaw, which can realize the quick separation of the puncture instrument auxiliary assembly and the puncture device; (8) by setting an auxiliary needle on the guide part, the auxiliary needle can be used to perform a skin breaking operation on the puncture site of the patient in advance, which can avoid the situation that the puncture instrument directly punctures the skin and bends and deforms, thereby ensuring that the puncture instrument can smoothly reach the target position, and since the deformation of the puncture instrument is reduced, the puncture precision is improved.

[0072] It should be noted that different embodiments can produce different beneficial effects, and in different embodiments, the beneficial effects that can be produced can be any one or a combination of the above, or any other beneficial effects that can be obtained.

[0073] The above has described the basic concepts, and it is obvious that the above detailed disclosure is only taken as an example and does not constitute a limitation on the present application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0074] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0075] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0076] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other variations may also fall within the scope of this application. Therefore, by way of example and not limitation, alternative configurations of the embodiments of this application may be considered consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly introduced and described in this application.

Claims

1. A puncture instrument auxiliary component, characterized in that: include: A sleeve (310), the sleeve (310) comprising a first block (311) and a second block (312), the first block (311) and the second block (312) being arranged relative to each other to form a first cavity; a first clamping and positioning structure (313) being provided on the sleeve (310); the first clamping and positioning structure (313) being a positioning groove provided on the outer wall of the sleeve (310); the positioning groove being a groove (3131) provided on the outer wall of the first block (311) or the second block (312); a first marker (314) being provided on the sleeve (310) at a position radially opposite to the groove (3131); the first marker (314) being a target ball of an optical tracking device, the optical tracking device being used to track and identify the first marker (314); The guide portion (320) comprises a first guide block (321), a second guide block (322), a second clamping and positioning structure (323), and a plug-in structure (324); the first guide block (321) and the second guide block (322) are arranged relative to each other to form a second cavity.

2. The puncture instrument auxiliary component according to claim 1, characterized in that: The first cavity includes at least a non-circular cross-section along a cross-section perpendicular to the axis.

3. The puncture instrument auxiliary component according to claim 1, characterized in that: The first cavity includes a first sub-cavity, a second sub-cavity and a third sub-cavity sequentially arranged along the axial direction, wherein the inner diameter of the second sub-cavity is larger than the inner diameters of the first sub-cavity and the third sub-cavity.

4. The puncture instrument auxiliary component according to claim 1, characterized in that: The first block (311) includes a first pin hole (3112), and the second block (312) includes a first bayonet (3122). The first bayonet (3122) can be inserted into the first pin hole (3112) to form a fit.

5. The puncture instrument auxiliary component according to claim 1, characterized in that: The positioning groove is an annular groove arranged along the circumference of the sleeve (310).

6. The puncture instrument auxiliary component according to claim 1, characterized in that: The area of ​​the plug-in structure (324) along a cross section perpendicular to the axis gradually decreases from top to bottom.

7. The puncture instrument auxiliary component according to claim 6, characterized in that: The end of the plug-in structure (324) is connected to an auxiliary needle (325).

8. The puncture instrument auxiliary component according to claim 4, characterized in that: The first guide block (321) includes a second pin hole (3212), and the second guide block (322) includes a second bayonet (3222). The second bayonet (3222) can be inserted into the second pin hole (3212) to form a fit.

9. The puncture instrument auxiliary component according to claim 1, characterized in that: The outer side surface of the guide portion (320) includes an abutment surface (326), and the abutment surface (326) is configured as a plane.

10. The puncture instrument auxiliary component according to claim 1, characterized in that: A second marker (327) is provided on the guide portion (320).

11. The puncture instrument auxiliary component according to claim 1, characterized in that: The first guide block (321) includes a first handle (3213), and the second guide block (322) includes a second handle (3223).

Images