CN114948123A

CN114948123A - Puncture probe

Info

Publication number: CN114948123A
Application number: CN202210566957.7A
Authority: CN
Inventors: 屈文良; 俞天白
Original assignee: Suzhou Microport Intelligent Medical Technology Co ltd
Current assignee: Suzhou Microport Intelligent Medical Technology Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-08-30

Abstract

The present invention provides a puncture probe, including: the probe comprises a substrate and a plurality of probe bodies with different specifications; said base for selectively removably connecting with one of said probe bodies; each of the probe bodies includes a blade at a distal end, the blade having an electrode; the substrate comprises a main control device, and when the substrate is connected with any one of the probe main bodies, the main control device is in communication connection with the electrode corresponding to the probe main body and is used for feeding back the detection result of the electrode. According to the configuration, based on the arrangement of the electrode and the main control device, an operator can adjust the insertion angle or depth of the probe main body in real time according to the feedback of the main control device in the using process, the problem that the current screw channel is not detectable in the establishing process is solved, the insertion angle or depth of the probe main body is convenient to adjust, and the safety of establishing the screw channel is improved.

Description

Puncture probe

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture probe.

Background

In screw implantation surgery, medical instruments with long handles are often used. The design of handle appearance has direct relevance with user's operational stability and comfort level, and in cervical vertebra arcus root operation, the doctor need operate various long handle surgical instruments to establish the nail way, and long arm of force effect causes unstably more easily, and the stability and the accuracy of establishing the nail way can be worse.

The channel is generally required to be pre-established before the screw is implanted, the channel is generally established according to the experience of a doctor, trial drilling is performed according to the approximate walking direction of the medical anatomical structure, the risk of misplacing the screw is high, and the screw can puncture cortical bone at some complicated anatomical positions, so that the risks of injury and the like are brought.

Disclosure of Invention

The invention aims to provide a puncture probe to solve the problem of poor safety caused by the fact that the existing puncture tool channel establishment process is undetectable.

In order to solve the above technical problem, the present invention provides a puncture probe, including: the probe comprises a substrate and a plurality of probe bodies with different specifications;

the base is used for selectively and detachably connecting with one of the probe bodies;

each of the probe bodies includes a blade at a distal end, the blade having an electrode;

the substrate comprises a main control device, and when the substrate is connected with any one of the probe main bodies, the main control device is in communication connection with the electrode corresponding to the probe main body and is used for feeding back the detection result of the electrode.

Optionally, the base includes a housing, and the main control device is accommodated in the housing; the shell extends along the radial direction of the probe main body and is divided into a large holding part and a small holding part by the axis of the probe main body, wherein the large holding part is protruded towards the proximal end.

Optionally, the blade is helical or polygonal.

Optionally, the angle of the tip of the blade is 75 ° to 105 °.

Optionally, at least one of the probe bodies includes an outer tube and an inner core, the outer tube is axially through, and the inner core is detachably disposed through the outer tube; the electrodes are located on the inner core.

Optionally, the probe body comprises a radially arranged elastic member, and the base body comprises a housing having a receiving cavity open to a distal end; when the substrate is connected with any one of the probe bodies, the elastic piece corresponding to the probe body is abutted against the side wall of the accommodating cavity so as to lock the shell and the probe body.

Optionally, the sidewall of the accommodating cavity is provided with a radial recess; when the substrate is connected with any one of the probe bodies, the elastic piece corresponding to the probe body is used for being clamped into the recess so as to limit the axial positions of the probe body and the shell.

Optionally, the electrode includes a center electrode and a side electrode, the center electrode is located at the tip of the blade, and the side electrode is located on the side wall of the blade.

Optionally, the probe body includes a first contact point arranged along the axial direction and a second contact point arranged along the circumferential direction, and the first contact point and the second contact point are both electrically connected with the electrode; the main control device comprises a third contact and a fourth contact, wherein the third contact is open towards the far end along the axial direction, the fourth contact is arranged along the radial direction, the third contact is used for being connected with the first contact in an abutting mode, and the fourth contact is used for being connected with the second contact in an abutting mode.

Optionally, the first contact is an electrical plug, the third contact is a jack adapted to the electrical plug, and the third contact is welded to the circuit board of the main control device; the second contact is an annular contact ring, the fourth contact is an elastic contact piece, the elastic contact piece can generate displacement change along the radial direction, and when the base body is connected with any one of the probe main bodies, the elastic contact piece abuts against the contact ring.

Optionally, the main control device includes a warning unit, and the warning unit is configured to prompt warning information according to a detection result of the electrode.

In summary, the puncture probe provided by the present invention includes: the probe comprises a substrate and a plurality of probe bodies with different specifications; the base is used for selectively and detachably connecting with one of the probe bodies; each of the probe bodies includes a blade at a distal end, the blade having an electrode; the base body comprises a main control device, when the base body is connected with any one of the probe main bodies, the main control device is in communication connection with the electrode corresponding to the probe main body and is used for feeding back the detection result of the electrode.

According to the configuration, based on the arrangement of the electrode and the main control device, an operator can adjust the insertion angle or depth of the probe main body in real time according to the feedback of the main control device in the using process, the problem that the current screw channel is not detectable in the establishing process is solved, the insertion angle or depth of the probe main body is convenient to adjust, and the safety of establishing the screw channel is improved. The substrate can be selectively detachably connected with a certain probe body, is suitable for various different application scenes, can be matched with probe bodies with different specifications, and has high universality and low cost.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. Wherein:

FIG. 1a is a schematic view of a piercing probe according to an embodiment of the present invention;

FIG. 1b is an exploded view of a piercing probe according to an embodiment of the present invention;

FIG. 2a is a schematic view of a preferred example of a blade according to an embodiment of the present invention;

FIG. 2b is a schematic view of another preferred example of a blade according to an embodiment of the present invention;

FIG. 3a is a schematic view of a preferred example of a probe body of an embodiment of the invention;

FIG. 3b is a schematic view of another preferred example of a probe body of an embodiment of the invention;

FIG. 3c is a schematic view of yet another preferred example of a probe body according to an embodiment of the invention;

FIG. 3d is a schematic view of the probe body shown in FIG. 3c in assembly;

FIG. 3e is a schematic view of the probe body shown in FIG. 3c prior to assembly;

FIG. 4 is a partially enlarged view of a portion of the probe body and the substrate in the embodiment of the present invention.

In the drawings:

1-a probe body; 11-a blade part; 12-an outer tube; 13-inner core; 14-an elastic member; 15-a first contact; 16-a second contact; 2-a substrate; 21-a master control device; 211-third contact; 212-a fourth contact; 22-a housing; 221-big grip; 222-a small grip; 223-side wall; 224-concave.

Detailed Description

To further clarify the objects, advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a" and "an" are generally employed in a sense including "at least one," the terms "at least two" are generally employed in a sense including "two or more," and the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or at least two of that feature, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, including not only the endpoints. The terms "proximal" and "distal" are defined herein with respect to a piercing probe having an end for insertion into a human body and a gripping end extending out of the body. The term "proximal" refers to a position of the element closer to the gripping end of the penetration probe out of the body, and the term "distal" refers to a position of the element closer to the end of the penetration probe that is inserted into the body and thus further away from the gripping end of the penetration probe. Alternatively, in a manual or hand-operated application scenario, the terms "proximal" and "distal" are defined herein with respect to an operator, such as a surgeon or clinician. The term "proximal" refers to a position of the element closer to the operator, and the term "distal" refers to a position of the element closer to the piercing probe and therefore further from the operator. Furthermore, as used herein, the terms "mounted," "connected," and "disposed" on another element should be construed broadly and generally merely indicate that a connection, coupling, fit, or drive relationship exists between the two elements, and a connection, coupling, fit, or drive relationship between the two elements, whether direct or indirect through intervening elements, should not be construed as indicating or implying any spatial relationship between the two elements, i.e., an element may be located in any orientation within, outside, above, below, or to one side of another element unless the content clearly indicates otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Moreover, directional terminology, such as above, below, up, down, upward, downward, left, right, etc., is used with respect to the exemplary embodiments as they are shown in the figures, with the upward or upward direction being toward the top of the corresponding figure and the downward or downward direction being toward the bottom of the corresponding figure.

The following description refers to the accompanying drawings.

Referring to fig. 1a and 1b, an embodiment of the invention provides a piercing probe, which includes: a substrate 2 and a plurality of probe bodies 1 of different specifications; the substrate 2 is used for selectively and detachably connecting with one of the probe bodies 1; each of the probe bodies 1 includes a blade 11 at a distal end (a lower end in fig. 1 a), the blade 11 having an electrode (not shown); the base body 2 comprises a main control device 21, when the base body is connected with any one of the probe main bodies, the main control device 21 is in communication connection with the electrode corresponding to the probe main body 1 and is used for feeding back the detection result of the electrode. When the multifunctional cervical vertebra puncture needle is used, an operator holds the base body 2, the blade part 11 of the probe main body 1 is used for puncturing at a preset part (such as a cervical vertebra arch root) of a patient to establish a screw channel, and during the puncturing process, based on the arrangement of the electrode and the main control device 21, the operator can adjust the insertion angle or depth of the probe main body 1 in real time according to the feedback of the main control device 21, so that the problem that the current screw channel establishing process cannot be detected is solved, the insertion angle or depth of the probe main body 1 can be adjusted conveniently, and the safety of screw channel establishment is improved.

Optionally, the base body 2 includes a shell 22, and the main control device 21 is accommodated in the shell 22; the housing 22 extends along the radial direction (horizontal direction in fig. 1 a) of the probe body 1 and is divided into a large holding part 221 and a small holding part 222 by the axis a of the probe body 1, and it can be understood that the large holding part 221 and the small holding part 222 are divided according to the volume, and the volume of the large holding part 221 is larger than that of the small holding part 222. Wherein the large grip part 221 is convex towards the proximal end (upper end in fig. 1 a). The large grip part 221 and the small grip part 222 are arranged so that the outer shape of the shell 22 presents an asymmetric shape, preferably, the large grip part 221 protrudes more than the small grip part 222 by about two fingers along the radial direction of the probe body 1, when in use, the thumb and the index finger of an operator clasp the small grip part 222, and the middle finger, the ring finger and the small finger grip the large grip part 221, so that the grip is comfortable, and the force axis is stable when exerting force. In an exemplary embodiment, the proximal portion of the large grip 221 is raised linearly, which can effectively fit the palm of the operator, effectively support the force-applying portion of the palm, and easily maintain the stability of the force axis during force application, thereby preventing the probe body 1 from being buckled and shifted in the feeding direction, and thus stabilizing the feeding direction of the probe body 1.

Referring to fig. 2a and 2b, the blade 11 may be in a spiral shape or a polygonal shape. The helical blade 11 (as shown in fig. 2 a) or polygonal-prism blade 11 (as shown in fig. 2 b) can both open screw channel smoothly and not scratch tissue as easily as a blade. In particular, the spiral blade 11 can effectively discharge bone fragments while drilling the bone. The parameters such as the pitch of the helical blade 11 and the number of the edges of the polygonal blade 11 can be selected and arranged by those skilled in the art according to the actual situation.

In one embodiment, the main control device 21 includes an alarm unit (not shown), and the alarm unit 21 is configured to prompt an alarm message according to the detection result of the electrode. Further, the main control device 21 further includes a power supply control unit, a current measurement unit, and a signal calculation processing unit. The power supply control unit is used for supplying power to the electrodes, and the current measuring unit is used for detecting the current fed back by the electrodes. When the tip (hereinafter, referred to as a cutting edge for convenience of description) of the blade 11 enters a bone or a tissue of a human body, the current flowing in a circuit is different depending on the resistance at different portions. And then the signal calculation processing unit compares the current detected by the current measuring unit with a preset resistance value, so that the position of the current cutting edge can be obtained. And then the warning information is prompted through the warning unit so as to guide the direction and the depth of the probe body 1 entering the bone in real time. Alternatively, the alert information may be characterized by a signal that is easily perceived by the operator, such as a sound, light, screen display, or vibration. Both acoustic and optical signals are preferably used. The warning information can be characterized, for example, by a horn and warning lights integrated in the master control device 21.

Optionally, the electrode includes a central electrode and a side electrode, the central electrode is located at the tip of the blade portion 11, and the side electrode is located on the side wall of the blade portion 11. Preferably, the number of the side electrodes may be two or more. The arrangement of the center electrode and the side electrodes can reliably detect the resistance of the environment where the cutting edge is located.

Optionally, the angle α of the tip of the blade 11 is 75 ° to 105 °, preferably 90 °. The tip of the blade 11 is generally tapered, and the angle α indicates the angle of the apex of the taper. The larger the angle alpha of the cutting edge is, the more blunt the cutting edge is, which is not beneficial to the opening of screw channels; the smaller the angle of the cutting edge, the greater the distance between the center electrode and the side electrode and the greater the risk of puncturing cortical bone. Therefore, a reasonable compromise between the above two problems is required. And when the angle alpha of the cutting edge is 75-105 degrees, the two problems can be better considered.

Referring to fig. 3a to 3e, optionally, the probe body 1 is detachably connected to the base 2, and both can be easily disassembled and assembled. The operator can replace the probe body 1 with different specifications according to the use condition in one operation. As shown in fig. 3a to 3e, the probe bodies 1 of different specifications may have different diameters or lengths, or may have different structures and shapes such as detachable or bent. Fig. 3a shows a one-piece, rectilinear probe body 1, the outer diameter of the probe shaft of which can be selected to be 2.0mm, 2.5mm, 3.2mm or 4.0 mm. Figure 3b shows a one-piece curved probe body 1 with a probe shaft having an outer diameter of optionally 2.0mm or 2.5 mm. Fig. 3c to 3e show a split linear probe body 1, wherein the split linear probe body 1 comprises an outer tube 12 and an inner core 13, the outer tube 12 axially penetrates through the inner core 13, and the inner core 13 is detachably arranged on the outer tube 12; the electrodes are located on the inner core 13. Optionally, the outer diameter of the outer tube 12 is 2.5 mm. Further, the axial length of the split probe body 1 can be selected to be 160mm or 120 mm. Since the outer tube 12 of the split probe body 1 is axially through, it can also be used for bone cement infusion without inserting the inner core 13. Alternatively, the inner core 13 and the outer tube 12 may be connected by a screw connection (see fig. 4) or a snap connection. The connecting mechanism of the inner core 13 and the outer tube 12 is simple to assemble, can effectively meet the product connecting and fixing functions, and is simple in process and low in processing cost. Of course, the length and the outer diameter of the probe body 1 are provided as a few examples and are not limited to the length and the outer diameter of the probe body 1, and those skilled in the art can reasonably set the length and the outer diameter of the probe body 1 according to actual needs, and the invention is not limited thereto. The blade 11 may be provided on the inner core 13, the outer tube 12, or both the inner core 13 and the outer tube 12.

Referring to fig. 4, in an exemplary embodiment, the probe body 1 includes a radially disposed elastic member 14, and the housing 22 has a receiving cavity opened to a distal end; when the substrate 2 is connected to any one of the probe bodies 1, the elastic member 14 corresponding to the probe body 1 abuts against the sidewall 223 of the accommodating cavity to lock the housing 22 and the probe body 1. Preferably, the side wall 223 of the housing cavity has a radial recess 224; when the base 2 is connected to any one of the probe bodies 1, the elastic member 14 corresponding to the probe body 1 is engaged with the recess 224 to restrict the axial positions of the probe body 1 and the housing 22. The radial outer dimension of the elastic part 14 can be slightly larger than the radial inner dimension of the accommodating cavity, when the probe body 1 is assembled into the base body 2, the side wall 223 of the accommodating cavity can firstly play a role in guiding the assembly of the probe body 1, and then the elastic part 14 deforms inwards under the extrusion of the side wall 223 of the accommodating cavity, and after the elastic part 14 is clamped into the recess 224, the elastic part 14 and the recess are pressed and abutted to be locked.

Further, the probe body 1 comprises a first contact 15 arranged along the axial direction and a second contact 16 arranged along the circumferential direction, and both the first contact 15 and the second contact 16 are electrically connected with the electrodes; the main control device 21 includes a third contact 211 that is open toward the distal end in the axial direction, and a fourth contact 212 that is arranged in the radial direction, the third contact 211 is configured to be in abutting connection with the first contact 15, and the fourth contact 212 is configured to be in abutting connection with the second contact 16. The abutting connection of the third contact 211 with the first contact 15 and the abutting connection of the fourth contact 212 with the second contact 16 form an electrical connection, so that the electrodes are in electrical communication with the current measuring unit. As shown in fig. 4, in an example, the first contact 15 may be an electrical pin, the third contact 211 may be a socket adapted to the electrical pin, and the third contact 211 may be soldered to the circuit board of the main control device 21, and the electrical pin is inserted into the socket to achieve electrical connection. The second contact 16 may be an annular contact ring, and the fourth contact 212 may be an elastic contact piece, which can generate a certain displacement change along the radial direction, and when the base body 2 is connected to any one of the probe bodies 1, the elastic contact piece abuts against the contact ring, so as to realize electrical connection. The combination of the above-mentioned contacts combines the setting of elastic component 14 and holding chamber for the coupling mechanism assembly of probe main part 1 and base member 2 is simple, can effectively satisfy product connection fixed function, and simple process, processing cost are low. Of course, the combination of the above-mentioned contacts is only an exemplary example and not a limitation of the contacts, and those skilled in the art can select other connection modes according to the prior art, and the invention is not limited thereto.

In summary, the puncture probe provided by the present invention includes: the probe comprises a substrate and a plurality of probe bodies with different specifications; the base is used for selectively and detachably connecting with one of the probe bodies; each of the probe bodies includes a blade at a distal end, the blade having an electrode; the substrate comprises a main control device, and when the substrate is connected with any one of the probe main bodies, the main control device is in communication connection with the electrode corresponding to the probe main body and is used for feeding back the detection result of the electrode. According to the configuration, based on the arrangement of the electrode and the main control device, an operator can adjust the insertion angle or depth of the probe main body in real time according to the feedback of the main control device in the using process, the problem that the current screw channel is not detectable in the establishing process is solved, the insertion angle or depth of the probe main body is convenient to adjust, and the safety of establishing the screw channel is improved. The substrate can be selectively detachably connected with a certain probe body, is suitable for various different application scenes, can be matched with probe bodies with different specifications, and has high universality and low cost.

It should be noted that, several of the above embodiments may be combined with each other. The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A piercing probe, comprising: the probe comprises a substrate and a plurality of probe bodies with different specifications;

the base body comprises a main control device, when the base body is connected with any one of the probe main bodies, the main control device is in communication connection with the electrode corresponding to the probe main body and is used for feeding back the detection result of the electrode.

2. The puncture probe of claim 1, wherein the base includes a housing, the master control device being housed within the housing; the shell extends along the radial direction of the probe main body and is divided into a large holding part and a small holding part by the axis of the probe main body, wherein the large holding part is protruded towards the proximal end.

3. The piercing probe of claim 1, wherein the blade is helical or polygonal.

4. The piercing probe of claim 1, wherein the angle of the tip of the blade is 75 ° to 105 °.

5. The puncture probe of claim 1, wherein at least one of the probe bodies comprises an outer tube and an inner core, the outer tube extending axially therethrough, the inner core being removably disposed through the outer tube; the electrodes are located on the inner core.

6. The piercing probe of claim 1, wherein the probe body includes a radially disposed resilient member and the base includes a housing having a receiving cavity open to a distal end; when the substrate is connected with any one of the probe bodies, the elastic piece corresponding to the probe body is abutted against the side wall of the accommodating cavity so as to lock the shell and the probe body.

7. The piercing probe of claim 6, wherein the side wall of the receiving cavity has a radial depression; when the substrate is connected with any one of the probe bodies, the elastic piece corresponding to the probe body is used for being clamped into the recess so as to limit the axial positions of the probe body and the shell.

8. The puncture probe of claim 1, wherein the electrodes include a center electrode located at a tip of the blade and side electrodes located at a sidewall of the blade.

9. The piercing probe of claim 1, wherein the probe body includes an axially disposed first contact and a circumferentially disposed second contact, each of the first and second contacts being electrically connected to the electrode; the main control device comprises a third contact and a fourth contact, wherein the third contact is open towards the far end along the axial direction, the fourth contact is arranged along the radial direction, the third contact is used for being connected with the first contact in an abutting mode, and the fourth contact is used for being connected with the second contact in an abutting mode.

10. The piercing probe of claim 9, wherein the first contact is an electrical plug, the third contact is a socket adapted to the electrical plug, and the third contact is soldered to a circuit board of the master control device; the second contact is an annular contact ring, the fourth contact is an elastic contact piece, the elastic contact piece can generate displacement change along the radial direction, and when the base body is connected with any one of the probe main bodies, the elastic contact piece abuts against the contact ring.

11. The puncture probe of claim 1, wherein the main control device comprises an alarm unit, and the alarm unit is configured to prompt an alarm message according to the detection result of the electrode.