WO2020223911A1 - Needle guide for probe, and probe needle guide assembly - Google Patents

Abstract

Provided are a needle guide (100), and a probe needle guide assembly comprising the needle guide (100). The needle guide (100) comprises a bracket body (1). The needle guide (100) may further comprise an attachment device; and the attachment device comprises a first hook (11) and a second hook (12) arranged on the bracket body (1), and the attachment device further comprises a pulling fastener (2), wherein the pulling fastener (2) comprises a snap-fitter (221) and a stepped buckle (231). The snap-fitter (221) is fixed to the first hook (11) during use, and the stepped buckle (231) can be connected to the second hook (12) at a plurality of locking positions. According to the structure, an anti-release locking function is achieved for a probe (200), the adaptive ability for attachment of the probe (200) is improved, and the ease of assembly and the assembly efficiency are greatly improved.

Description

Piercing frame for probe and probe piercing frame assembly Technical field

The present invention relates to the field of medical equipment, in particular to a puncture frame for a probe and a probe puncture frame assembly.

Background technique

In the application of ultrasound interventional puncture, in addition to various ultrasound probes, the most important thing is the puncture frame of the ultrasound probe. Generally, during ultrasonic interventional surgery, the first step is to apply couplant to the surface of the transducer of the ultrasound probe, then cover the ultrasound probe cover on the ultrasound probe, and finally fix the puncture frame on the surface of the ultrasound probe via the probe cover . In this way, full coverage and isolation of the ultrasound probe can be achieved, and the ultrasound probe can be prevented from being contaminated during the operation. However, because the ultrasonic probe cover and the ultrasonic probe covering parts are usually regular rectangular shapes, and the shape of the ultrasonic probe is generally round and irregular, so the ultrasonic probe cover will fold to different degrees when covering the ultrasonic probe surface At the same time, ultrasonic probe covers produced by different manufacturers have different thicknesses. As a result, there are many unpredictable situations when the puncture frame is installed, which poses a challenge to the adaptive ability of the puncture frame during installation.

In addition, during the operation, the puncture frame and the ultrasound probe must be firmly installed together to safely perform puncture, biopsy, and aspiration. The puncture frame and the ultrasound probe must not be loose or shifted. At present, the installation and fixing methods of the puncture frame mainly include screw locking and buckle fixing. Specifically, the screw fixing method is mainly through screwing and slowly tightening the puncture frame to firmly fix the puncture frame on the surface of the ultrasound probe. After the operation, slowly loosen the screw to remove the puncture frame from the surface of the ultrasound probe. The buckle fixation method is mainly through the deformation of the elastic part provided on the puncture frame, clamping the ultrasonic probe to achieve the purpose of fixing the puncture frame, and then deadlift the puncture frame to make the elastic part deformed to remove the puncture frame after use. purpose.

Although screw locking has the advantage of firm fixation, it needs to be screwed many times when installing and disassembling the puncture frame, which results in an increase in operation time and inefficiency due to the time-consuming operation. In addition, screws are prone to rust after long-term use, which is extremely disadvantageous in harsh medical environments. In addition, because the buckle fixing method is completed by the deformation of the elastic component during installation, a certain force needs to be applied when installing or disassembling the puncture frame. At the same time, the elastic component is greatly compressed with the surface of the ultrasonic probe during the deformation process. Friction will cause a certain probability of damage to the surface of the ultrasonic probe. Furthermore, in general ultrasonic surgery, the work of installing the puncture frame is done by assistant physicians who are inexperienced or have little strength (such as female doctors), so the doctor's experience will be poor.

In addition, in the puncture frame for the probe according to the related art, there is also a problem that the puncture frame can be used repeatedly, which causes cross interference.

Summary of the invention

The present invention aims to provide a puncture frame for probes as follows: the puncture frame can avoid the loosening and displacement of the puncture frame and the probe, can be assembled with high efficiency, can provide self-adaptive ability during installation, It can be installed with less force and/or can avoid repeated use, thereby solving or alleviating one or more of the above-mentioned problems.

According to an aspect of the present invention, a puncture frame is provided, and the puncture frame includes a frame body. The puncture frame is characterized in that it may further include an attachment device that includes a first hook and a second hook provided on the frame body, and the attachment device further includes a pull buckle, the pull buckle includes a buckle and a step buckle , Wherein the buckle is fixed to the first hook when in use, and the step buckle can be connected to the second hook at a plurality of locking positions.

Optionally, the buckle and the first hook are fixed to each other by integral molding;.

Optionally, the buckle and the first hook can be fixed to each other by fasteners.

Optionally, the buckle and the first hook can be fixed to each other by welding or bonding.

Optionally, the pull buckle further includes a hoop which has flexibility and is connected to the frame body through a buckle and a step buckle, wherein the hoop is arranged to bulge from the lower surface of the frame body in a radial direction.

Optionally, the hoop is provided with a failure line, and the stiffness of the hoop at the failure line is less than the stiffness of the hoop at other positions.

Optionally, the attachment device includes a handle connected to the destruction line.

Optionally, the pull buckle further includes a first platform and a second platform, wherein the buckle is provided on the first platform, the step buckle is provided on the second platform, and the hoop is provided between the first platform and the second platform .

Optionally, a plurality of first inclined surfaces and a plurality of first stop surfaces are alternately provided on at least one of the side surfaces of the step buckle, wherein at least one of the side surfaces is arranged on the uppermost side in the radial direction There is a first inclined surface among a plurality of first inclined surfaces, and the second hook is provided with a buckle hole through which the step buckle moves and an elastic piece arranged in the buckle hole. The elastic piece is flexible and is provided with a second inclined surface and The second stop surface, the second inclined surface is arranged above the second stop surface in the radial direction, wherein the first stop surface and the second stop surface are approximately horizontal surfaces, and the first inclined surface and the first stop surface are substantially horizontal. The angle formed by the plane and the angle formed by the second inclined plane and the second stop plane are approximately the same acute angles.

According to another aspect of the present invention, a probe puncture frame assembly is provided. The probe puncture frame assembly is characterized by including a probe and the puncture frame according to the above aspect.

Optionally, the probe may be an ultrasound probe.

Alternatively, the probe may be an intracavity probe.

According to the above structure provided by the present invention, the attachment device is only allowed to move in the tightening direction (the direction in which the probe is tightened) when the attachment device attaches the probe, and at the same time the attachment device is prevented from moving in the release direction ( The direction in which the probe is released) is moved, thereby realizing the anti-release locking function of the probe. In addition, when assembling the puncture frame provided by the present invention, the operator can first fasten the buckle fixedly with the first hook, and then buckle the step in the second hook while wrapping the probe with a hoop Tighten, so as to achieve the purpose of firmly installing the puncture frame on the surface of the probe. In this way, the structure provided according to the present invention not only provides an adaptive ability to attach the probe, but more importantly, especially compared to the need to attach from multiple locations (for example, two locations). The connection situation greatly improves assembly convenience and assembly efficiency.

Description of the drawings

The accompanying drawings are used to better understand the present invention, and do not constitute an improper limitation of the present invention. among them:

Figure 1 shows a perspective view of a probe puncture frame assembly according to the present invention;

Figure 2 shows a perspective view of the puncture frame in the probe puncture frame assembly shown in Figure 1;

Figure 3 shows a cross-sectional view of the puncture frame in the probe puncture frame assembly shown in Figure 1 taken along the attachment device;

Figure 4 shows a perspective view of the puncture frame in the probe puncture frame assembly shown in Figure 1, wherein the pull buckle in the attachment device is omitted to make the hook of the attachment device clearer;

Figure 5 shows a perspective view of the pull buckle viewed from a different angle;

Figure 6 shows a schematic cross-sectional view of the connector of the pull buckle; and

Figure 7 shows a schematic cross-sectional view of the hook.

In the drawings, the same or corresponding technical features or components will be represented by the same or corresponding reference numerals.

Detailed ways

Hereinafter, the present invention will be described in detail by means of exemplary embodiments with reference to the accompanying drawings.

Next, first, the basic structure of the probe puncture frame assembly according to the present invention will be described in detail with reference to FIG. 1.

Fig. 1 shows the basic structure of the probe puncture frame assembly according to the present invention. In the illustrated embodiment, the probe puncture frame assembly may include a puncture frame 100 and a probe 200, wherein the puncture frame 100 is firmly fixed on the surface of the probe 200 by an attachment device. In the illustrated embodiment, the probe 100 is an ultrasound probe. By installing the puncture frame 200 on the ultrasound probe, the puncture needle can be guided to the target position of the human body under the guidance of ultrasound. It can be understood that although the present invention is described with an ultrasound probe as an example, the probe 200 may also be any other probe, such as an infrared probe, without departing from the spirit and scope of the present invention. In addition, although the present invention is particularly effective in the case of an intracavity probe, it is understood that the probe according to the present invention may also be an extracavity probe without departing from the spirit and scope of the present invention.

2 and 3 schematically show a perspective view and a cross-sectional view of the puncture frame in the probe puncture frame assembly shown in FIG. 1, respectively. 4 and 5 show in detail the three-dimensional views of the hook and the pull buckle of the attachment device of the puncture frame.

2 to 5, the puncture frame 100 may include a frame body 1 and an attachment device. In the illustrated embodiment, the attachment device includes a first hook 11 and a second hook 12 provided on the frame 1, and the attachment device further includes a pull buckle 2, as clearly shown in FIG. The buckle 2 includes a buckle 221 and a step buckle 231. According to the exemplary embodiment shown in FIGS. 2 and 3, the first hook 11 and the second hook 12 are provided on the frame 1 of the puncture frame 100, and the buckle 221 and the step buckle 231 are connected to the first hook when in use. 11 and the second hook 12 thereby firmly fix the probe. It is also conceivable that the buckle 221 and the step buckle 231 are arranged on the frame 1, and the frame 1 provided with the buckle 221 and the step buckle 231 is in use with the buckle 221 and the step provided on another fixing device. The buckle 231 is connected to firmly fix the probe. The term "in use" refers to the state where the hook and the pull buckle are fixed together to firmly fix the probe, that is, the state where the probe 200 and the puncture frame 100 are assembled together to form a probe puncture frame assembly.

Preferably, the buckle 221 and the first hook 11 are fixed to each other by integral molding, in this way, the assembly process associated with the assembly of the buckle 221 and the first hook 11 is reduced. However, it may also be provided that the buckle 221 and the first hook 11 are fixed to each other by fasteners, or the buckle 221 and the first hook 11 are fixed to each other by welding and bonding. It should be noted that the fixing method of the buckle 221 and the first hook 11 is not subject to any restriction, as long as the fixing between the two can be achieved.

As shown in FIG. 5, preferably, the step buckle 231 is shown as a flat belt. However, it is conceivable that the step buckle 231 may also have other cross-sectional shapes besides the belt shape, such as square, circular or other irregular shapes, as long as the step buckle 231 can cooperate with the second hook 12 to achieve the following Specifically described anti-release locking function. Hereinafter, the anti-release locking function provided by the embodiment of the present invention will be specifically described with reference to FIGS. 2 to 7.

As shown in FIGS. 5 and 6, the step buckle 231 is alternately provided with a plurality of first stop surfaces 2312 shown as substantially horizontal surfaces on one of its side surfaces and shown as and The first stop surface forms a plurality of first inclined surfaces 2311 of an acute inclined surface. It should be pointed out that in this case, the step buckle 231 is provided with a first inclined surface 2311 at the top in the radial direction on the side surface on which the first stop surface 2312 and the first inclined surface 2311 are provided, so as to facilitate The initial penetration of the step buckle 231 into the second hook 12. The term "radial direction" refers to the extension direction (axial direction) of the frame when the installation is completed.

In addition, as shown in FIG. 7, the second hook 12 may be provided with a buckle hole 112 through which the step buckle 231 moves and an elastic piece 111 arranged in the buckle hole 112. The elastic piece 111 has certain flexibility to be able to adapt to the movement of the step button 231. In the illustrated embodiment, the elastic sheet 111 is provided with a second inclined surface 1111 and a second stop surface 1112 that cooperates with the first stop surface 2312.

According to an exemplary embodiment, the second stop surface 1112 is a substantially horizontal surface similar to the first stop surface 2312, and the second inclined surface 1111 is an inclined surface that forms an acute angle with the second stop surface 1112. Preferably, the angle formed by the first inclined surface 2311 and the first stop surface 2312 is approximately the same as the angle formed by the second inclined surface 1111 and the second stop surface 1112, so that the step buckle 231 can be moved along with a small force. Slide the shrapnel 11.

According to the above configuration, when the step buckle 231 is pushed in the buckle hole 112 in the tightening direction that tightens the probe, the first inclined surface 2311 on the step buckle 231 pushes the second slope on the elastic sheet 111 provided in the hook 12 The inclined surface 1111 causes the elastic elastic sheet 111 to be elastically deformed. When the step buckle 231 continues to move in the tightening direction in the buckle hole 112, the first inclined surface 2311 is pushed away from the second inclined surface 1111. At this time, since the force applied by the first inclined surface to the elastic piece 111 is released, the elastic piece 111 is reset so that the first stop surface 2312 and the second stop surface 1112 are engaged. Due to the blocking effect of the second stop surface 1112 on the first stop surface 2312, the step buckle 231 can be prevented from moving in the release direction for releasing the probe. In this way, according to the puncture stand 100 provided by the present invention, when the attachment device attaches the probe, only the attachment device is allowed to move in the tightening direction (the direction in which the probe is tightened), and at the same time, the attachment device is prevented Move along the release direction (the direction in which the probe is released) to realize the anti-release lock function of the probe.

In addition, by providing a plurality of first inclined surfaces 2311 and a corresponding plurality of first stop surfaces 2312 on the side surface of the step buckle 231, the step buckle 231 can be set at a position corresponding to the plurality of first stop surfaces 2312. Each locking position cooperates with the second stop surface 1112 on the elastic piece 111 to realize the above-mentioned anti-release locking function. In this way, by providing a plurality of locking positions, the tightness of the fit between the pull buckle 2 and the probe 200 can be adjusted, thereby providing an adaptive ability during the installation of the puncture frame.

It is conceivable that various modifications can be made to the foregoing embodiments without departing from the scope and spirit of the present invention. For example, the step buckle 231 may be provided with a first inclined surface 2311 and a first stop surface 2312 on more than one side surface thereof. It should be noted that when the first inclined surface 2311 and the first stop surface 2312 are provided on more than one side surface of the step buckle 231, the arrangement of the first inclined surface 2311 and the first stop surface 2312 on each side surface It should be synchronized. In addition, it is also conceivable to construct the first inclined surface 2311 and the second inclined surface 1111 in other ways, as long as the cooperation of the first inclined surface 2311 and the second inclined surface 1111 can enable the step buckle 231 to be able to align the inner edge of the buckle hole 112 with a small force. Just move in the tightening direction. For example, the first inclined surface 2311 and the second inclined surface 1111 can be set in a smooth arc shape. Similarly, it is also conceivable to construct the first stop surface 2312 and the second stop surface 1112 in other ways. For example, the first stop surface 2312 and the second stop surface 1112 may respectively include grooves and protrusions to further ensure The above-mentioned anti-release locking function.

As shown in FIG. 5, according to an embodiment of the present invention, the attachment device may include a hoop 21 that can wrap the probe. The hoop 21 is flexible to be plastically deformable to a certain extent, so as to better Adapt to various probe shapes. According to an exemplary embodiment, the hoop 21 is connected to the frame 1 by a buckle 221 and a step buckle 231, wherein, when the attachment device is assembled, the hoop 21 is arranged in a radial direction from the lower surface of the frame 1 Protruding to be able to tightly wrap the probe. Preferably, the flexible hoop 21 is provided with a rupture device that can be operated to rupture the hoop 21. In the embodiment shown in the figure, the rupture device is shown as a failure line 211, wherein the stiffness of the hoop 21 at the failure line 211 is less than the stiffness of the hoop 21 at the remaining positions. In this way, after the puncture frame 100 is used, the rupture of the hoop 21 can be achieved through the destruction line 211, so that the attachment device cannot be reinstalled, thereby avoiding the risk of cross infection caused by repeated use of the puncture frame. Preferably, the attachment device may include a handle 24 connected to the destruction line 211, by which the operation of the rupture device can be easily realized.

In order to facilitate the operation of the attachment device, according to an exemplary embodiment, the pull buckle 2 of the present invention may further include a first platform 22 and a second platform 23, wherein the buckle 221 is provided on the first platform 22 and the step buckle 231 is provided. On the second platform 23, and the hoop 21 is arranged between the first platform 22 and the second platform 23, so that the flexible hoop 21 can be better connected to the buckle 221 and the step buckle 231 and The operation of the attachment device can be optimized. Specifically, when attaching the puncture frame 100 of the present invention to the probe 200, the buckle 221 can be fixedly fastened to the first hook 11 (in the case where the buckle 221 and the first hook 11 are integrally formed, it can be This step is omitted), and then cover the hoop 21 set on the pull buckle 2 on the surface of the probe and wrap the probe, and then lock the step buckle 231 with the second hook 12 set on the frame 1 Achieve the purpose of firmly installing the puncture frame 100 on the surface of the ultrasonic probe for puncture operation. In this way, compared to adjusting the attachment of the puncture frame 100 and the probe 200 from the position of the buckle 221 and the position of the step buckle 231 respectively during use, the ease of assembly of the puncture frame 100 and the probe 200 is greatly improved. Performance and assembly efficiency.

The foregoing specific implementations do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that, depending on design requirements and other factors, various modifications, combinations, sub-combinations, and substitutions can occur. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

A puncture frame, which includes a frame body, characterized in that: The puncture frame further includes an attachment device including a first hook and a second hook provided on the frame body, and the attachment device further includes a pull buckle, the pull buckle includes a buckle And step buckle, Wherein, the buckle is fixed to the first hook when in use, and the step buckle can be connected to the second hook at a plurality of locking positions. The puncture frame according to claim 1, wherein: The buckle and the first hook are fixed to each other by integral molding; The buckle and the first hook can be fixed to each other by fasteners; or The buckle and the first hook can be fixed to each other by welding or bonding. The puncture frame according to claim 1, wherein the pull buckle further comprises a hoop, which is flexible and is connected to the frame body through the buckle and the step buckle, wherein: The hoop is arranged to bulge in the radial direction from the lower surface of the frame. The puncture frame according to claim 3, wherein the hoop is provided with a failure line, and the stiffness of the hoop at the failure line is less than the stiffness of the hoop at other positions. The puncture frame according to claim 4, wherein the attachment device comprises a handle connected to the destruction line. The puncture frame according to any one of claims 3 to 5, wherein the pull buckle further comprises a first platform and a second platform, wherein the buckle is provided on the first platform and The step buckle is arranged on the second platform, and the hoop is arranged between the first platform and the second platform. The puncture frame according to any one of claims 1 to 5, wherein: A plurality of first inclined surfaces and a plurality of first stop surfaces are alternately provided on at least one side surface of the side surfaces of the step buckle, wherein the at least one side surface is the smallest in the radial direction. One of the plurality of first inclined surfaces is provided above, and The second hook is provided with a buckle hole through which the step buckle can move and an elastic piece arranged in the buckle hole, the elastic piece is flexible and is provided with a second inclined surface and a second stop surface, The second inclined surface is arranged above the second stop surface in the radial direction, wherein, The first stop surface and the second stop surface are substantially horizontal surfaces, and the angle formed by the first inclined surface and the first stop surface is relative to the second inclined surface and the second stop surface The angles formed by the faces are approximately equal acute angles. A probe puncture frame assembly, wherein the probe puncture frame assembly includes a probe and the puncture frame according to any one of claims 1 to 7. The probe puncture frame assembly according to claim 8, wherein the probe is an ultrasonic probe. The probe puncture frame assembly according to claim 9, wherein the probe is an intracavity probe.

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