Fixing device for instruments

Abstract

The utility model provides a fixing device for an instrument. The fixing device comprises a fixing piece, a holding piece and a driving assembly. The fixing piece is provided with an accommodating cavity for accommodating at least one part of the instrument fixing part; the containing cavity is a through groove penetrating front and back in the axial direction of the containing cavity and comprises a groove opening serving as an installation opening of the instrument fixing part. The holding piece is used for holding the instrument fixing part in the accommodating cavity; the driving assembly comprises a driving piece and a driven piece which are in transmission connection with each other, and the driving piece and the driven piece are rotationally connected with the fixing piece through a driving shaft and a driven shaft which extend in the axial direction respectively; in the assembled state, the holding piece is arranged in the containing cavity and located between the fixing piece and the instrument fixing part. The driving piece can drive the driven piece to rotate under the action of external force, so that the driven piece extrudes the holding piece and enables the holding piece to deform in the direction close to the instrument fixing part, and therefore the instrument fixing part is held. Therefore, the instrument can be conveniently held and fixed.

Description

Technical Field

[0001] This application relates to a device fixation device that facilitates the fixation of instruments. Background Technology

[0002] Ultrasound probes are widely used in clinical practice. Precise control of the probe's position and displacement within the body tissue is required to create a three-dimensional model of the object being examined. Furthermore, prolonged fixation of the probe in a specific location on the patient is often necessary for image acquisition (e.g., for contrast-enhanced ultrasound of a lesion or organ). However, prolonged manual fixation of the ultrasound probe increases the burden on doctors and raises medical risks.

[0003] Therefore, clamps or other fixing devices are needed for ultrasound probes. However, existing ultrasound probe fixing devices usually have problems such as complex structure, inconvenience in operation, and even easy contamination by body fluids.

[0004] Therefore, in traditional technologies, there is a technical challenge of how to both fix the equipment and reduce the complexity of operation. Utility Model Content

[0005] The purpose of this application is to provide a device fixation device for instruments that facilitates fixation. To achieve the above objective, one aspect of this application is a device fixation device for instruments, wherein the instrument has an elongated instrument fixation portion; it includes a fixing member, a holding member, and a drive assembly; the fixing member has a receiving cavity for accommodating at least a portion of the instrument fixation portion; the receiving cavity is a through groove extending longitudinally along its axial direction and includes a slot serving as an mounting port for the instrument fixation portion; the holding member is used to hold the instrument fixation portion within the receiving cavity; the drive assembly includes an active member and a driven member that are mutually connected, the active member and the driven member being rotatably connected to the fixing member via axially extending active shafts and driven shafts, respectively; in the assembled state, the holding member is placed within the receiving cavity, between the fixing member and the instrument fixation portion; the active member can drive the driven member to rotate under external force, thereby causing the driven member to squeeze the holding member and deform it towards the instrument fixation portion, thus holding the instrument fixation portion.

[0006] In a preferred embodiment, one of the driving member and the driven member has an axially extending sliding portion, and the other has a sliding groove adapted to the sliding portion; when the driving member drives the driven member to rotate, the sliding portion slides synchronously within the sliding groove.

[0007] In a preferred embodiment, one of the active member and the fixed member is provided with a limiting groove, and the other is provided with an elastic limiting protrusion; when the active member squeezes the holding member to a predetermined position via the driven member, the limiting protrusion engages with the limiting groove to limit the displacement of the active member relative to the fixed member.

[0008] In a preferred embodiment, the active element is connected to a drive handle.

[0009] In a preferred embodiment, one of the outer wall of the device fixing part and the inner wall of the holding member has a holding protrusion, and the other has a holding groove adapted to the holding protrusion.

[0010] In a preferred embodiment, a base is also included, to which the fastener is rotatably connected.

[0011] In a preferred embodiment, one of the fastener and the base has an arcuate groove, and the other has a pin placed within the groove; the fastener is rotatably connected via the pin and the groove.

[0012] In a preferred embodiment, the base includes a damping unit that applies a predetermined resistance to the fixing member during rotation.

[0013] In a preferred embodiment, the damping unit is an elastic component, and during the rotation of the fixing member, the damping unit is compressed by the fixing member and is in a state of deformation stress. Attached Figure Description

[0014] To more clearly illustrate this application, the accompanying drawings will be described and explained below. Obviously, the drawings described below only illustrate certain aspects of some exemplary embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0015] Figure 1 This is an example of an external view of a fixture for an instrument.

[0016] Figure 2 This is a schematic diagram illustrating the structure of the driving and driven components.

[0017] Figure 3 This is a schematic diagram of an example base.

[0018] Figure 4 This is an example of an overall assembly diagram.

[0019] Attached image caption:

[0020] 1. Fastener

[0021] 11. Receptacle

[0022] 12. Cavity floor

[0023] 13 Guide slots

[0024] 14 Limiting grooves

[0025] 15. Trench

[0026] 2 Holding components

[0027] 21 First shell wall

[0028] 22 Second shell wall

[0029] 23 Holding Protrusion

[0030] 3. Driver Components

[0031] 31 Active component

[0032] 311 drive shaft

[0033] 312 Sliding part

[0034] 313 Drive Handle

[0035] 314 Limiting protrusion

[0036] 322 Sliding groove

[0037] 321 Driven Shaft

[0038] 32 Follower

[0039] 5. Base

[0040] 51 Pins

[0041] 52 Damping Units Detailed Implementation

[0042] Various exemplary embodiments of this application are described in detail below with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the application or its application or use. This application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise stated, the relative arrangement of components and steps, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0043] As used in this application, the words “including” or “comprising” or similar terms mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility that it may also cover other elements.

[0044] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as being interpreted with idealized or highly formalized meanings, unless explicitly defined herein.

[0045] For components, specific model numbers and other parameters of components not described in detail in this section, the interrelationships between components and control circuits, these may be considered as techniques, methods and devices known to those skilled in the art, but where appropriate, such techniques, methods and devices should be considered part of the specification.

[0046] Overall Structure

[0047] First refer to Figure 1-4 This application describes the overall structure of the device fixation device. Figure 1 This is an external view of the fixation device used in medical instruments. Figure 2 This is a structural schematic diagram of the driving member 31 and the driven member 32. Figure 3 This is a schematic diagram of base 5. Figure 4 This is a schematic diagram of the overall assembly.

[0048] The instrument fixation device described in this application is used to fix an instrument. In medical applications, this instrument can be a medical device such as an ultrasound probe for the rectum. For simplicity, only an ultrasound probe will be used as an example here. Typically, this device includes an elongated instrument fixation part, such as a handle for an ultrasound probe, for easy handling and fixation.

[0049] During operation, it is often necessary to fix the instrument in place to precisely control its position and prevent unnecessary changes or deviations in its position and angle, which could affect the work efficiency. Typically, the instrument's fixing part is first installed into an instrument fixing device, which is then fixed to the worktable. The worktable is equipped with a pusher, such as a stepper motor. By controlling parameters such as the direction, speed, and timing of the pusher's movement, the instrument's position and posture can be precisely adjusted. Taking a rectal ultrasound probe as an example, the above method allows the probe to advance at a uniform speed within the rectum. It can also be pre-set to acquire rectal image information every certain step length, ultimately creating a three-dimensional ultrasound model of the rectum.

[0050] See Figure 1The device fixing device of this application includes a fixing member 1, a holding member 2, and a driving assembly 3. The fixing member 1 has a receiving cavity 11 for accommodating at least a portion of the aforementioned device fixing part; the receiving cavity 11 is a through groove that extends back and forth along its axial direction, and includes a slot that serves as the mounting port of the device fixing part, which is the opening of the receiving cavity 11 facing one side as shown in the figure.

[0051] For ease of explanation, the direction of penetration of the accommodating cavity 11 is taken as the axial direction, the direction perpendicular to the axial direction is taken as the radial direction, and the direction surrounding the axial direction is taken as the circumferential direction.

[0052] As shown in the figure, as an example, the fixing member 1 is a semi-circular structure with an opening on the radially upward side. The radial cross section of the fixing member 1 is C-shaped or other semi-circular shapes. During installation, the instrument fixing part is inserted into the receiving cavity 11 from the slot.

[0053] As a preferred embodiment, the fastener 1 is provided with a circumferentially extending guide groove 13. Specifically, the fastener 1 has a cavity bottom 12 away from the groove opening, and the guide groove 13 is configured to extend radially from the cavity bottom 12 in a direction away from the groove opening and penetrate through the base of the fastener 1. The guide groove 13 has a predetermined width in the axial direction for accommodating the drive assembly 3.

[0054] like Figure 1 As shown, the holding member 2 is adapted to the receiving cavity 11, forming a semi-encircling shell structure with an opening on one radial side, having a shell bottom and a first shell wall 21 and a second shell wall 22 located on both sides of the shell bottom. In the assembled state, the holding member 2 is placed inside the receiving cavity 11, between the fixing member 1 and the aforementioned instrument fixing part, with the shell bottom of the holding member 2 abutting against the cavity bottom 12 of the receiving cavity 11, and the first shell wall 21 and the second shell wall 22 arranged on both sides of the instrument fixing part for holding the instrument fixing part.

[0055] See Figure 1 , Figure 2 The drive assembly 3 includes a driving member 31 and a driven member 32 that are connected to each other. The driving member 31 and the driven member 32 are rotatably connected to the guide groove 13 of the fixing member 1 via the axially extending driving shaft 311 and driven shaft 321, respectively.

[0056] like Figure 2 As shown, preferably, the driving member 31 has an axially extending sliding portion 312, and the driven member 32 has a radially extending sliding groove 322 adapted to the sliding portion 312. In this embodiment, the sliding portion 312 is an axially extending longitudinal shaft, while the sliding groove 322 is a through groove in the axial direction and has a bent <-shaped radial cross-section to facilitate the reciprocating sliding of the sliding portion 312 within it. It can be understood that the sliding groove 322 can also be provided on the driving member 31 and the sliding portion 312 can be provided on the driven member 32, as long as the driving member 31 and the driven member 32 can be connected in a transmission manner.

[0057] In the assembled state, the sliding part 312 is located within the sliding groove 322. When an external force rotates the driving member 31 axially, the sliding part 312 slides radially within the sliding groove 322, and drives the driven member 32 to rotate synchronously in the opposite direction via the sliding groove 322. This allows the driven member 32 to press against the first shell wall 21 of the holding member 2, causing the first shell wall 21 to deform in the direction closer to the aforementioned instrument fixing part, that is, the first shell wall 21 to deform radially inward toward the receiving cavity 11, thereby clamping the instrument fixing part and achieving its holding and fixing.

[0058] More preferably, the sidewall of the active member 31 adjacent to the guide groove 13 is provided with an axially extending elastic limiting protrusion 314, and the inner wall of the guide groove 13 is correspondingly provided with an axially extending limiting groove 14. When the active member 31 is pressed to the holding member 2 by the driven member 32 to the holding position, the limiting protrusion 314 is engaged with the limiting groove 14 to limit the displacement of the active member 31 relative to the fixed member 1. At this time, the drive assembly 3 is locked, and the instrument fixing device enters a self-locking state. The ultrasonic probe can be moved and its posture changed accordingly by driving the worktable. When unlocking is required, only a certain amount of external force needs to be applied to deform the limiting protrusion 314 and remove it from the limiting groove 14.

[0059] In this embodiment, the active component 31 is connected to a drive handle 313 to facilitate operation by personnel.

[0060] As a preferred embodiment, to achieve a better holding effect, one of the outer wall of the aforementioned instrument fixing part and the inner wall of the holding member 2 has a holding protrusion 23, and the other has a holding groove (not shown in the figure) that is adapted to the holding protrusion 23. When the holding member 2 is compressed and deformed, the holding protrusion 23 is inserted into the holding groove, thereby achieving a more powerful fixation of the instrument fixing part.

[0061] For further optimization, see Figure 3 , Figure 4 This application also includes a base 5, to which the fastener 1 is rotatably connected and mounted on the worktable via the base 5. As an example, the fastener 1 has an arc-shaped groove 15 on at least one of its axially extending front and rear sides, and the corresponding base 5 has an axially extending pin 51 located within the groove 15 on its sidewall adjacent to the fastener 1. The fastener 1 is rotatably connected via the pin 51 and the groove 15. It is understood that the pin 51 can also be located on the fastener 1 and the groove 15 on the base 5; this is not a limitation.

[0062] Preferably, the base 5 includes a damping unit 52, which applies a predetermined resistance to the fixing member 1 during rotation relative to the base 5. Preferably, the damping unit 52 is an elastic component, such as a steel ball with a spring. During the rotation of the fixing member 1, the damping unit 52 is compressed by the fixing member 1 and is under deformation stress.

[0063] In summary, the instrument fixation device of this application uses the drive component 3 to squeeze the holding member 2, and the holding member 2 is used to hold and fix the ultrasound probe. It also provides the ultrasound probe with a manually adjustable degree of rotational freedom, which is convenient to operate and can effectively fix the ultrasound probe to prevent it from shaking easily.

[0064] In addition, the fixation element 1 is designed with an opening on one side to achieve a semi-encircling fixation of the ultrasound probe. In actual operation, protective materials such as sterile cloth can be placed in the accommodating cavity 11 of the fixation element 1 before the ultrasound probe is placed into the accommodating cavity 11. In this way, after the ultrasound probe is inserted into human tissue, it can effectively prevent the contamination of the instrument fixation device by body fluids.

[0065] It should be understood that the specific embodiments described above are only used to explain this application, and the scope of protection of this application is not limited thereto. Any changes, substitutions, or combinations made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be covered within the scope of protection of this application.

Claims

1. A device for fixing an instrument, the instrument having an elongated instrument fixing part; characterized in that: Includes fasteners, holding components, and drive components; The fastener has a receiving cavity for accommodating at least a portion of the instrument fixing part; the receiving cavity is a through groove extending forward and backward along its axial direction, and includes a slot serving as the mounting port of the instrument fixing part. The holding member is used to hold the instrument fixing part in the accommodating cavity; The drive assembly includes a driving member and a driven member that are connected to each other in a transmission manner. The driving member and the driven member are rotatably connected to the fixed member via axially extending driving shafts and driven shafts, respectively. In the assembled state, the holding member is placed inside the accommodating cavity, between the fixing member and the instrument fixing part; The active member can drive the driven member to rotate under the action of external force, thereby causing the driven member to squeeze the holding member and deform it in the direction of approaching the device fixing part, thereby holding the device fixing part.

2. The instrument fixation device according to claim 1, characterized in that: One of the driving member and the driven member has an axially extending sliding portion, and the other has a sliding groove adapted to the sliding portion. When the driving member drives the driven member to rotate, the sliding part slides synchronously within the sliding groove.

3. The fixation device for instruments according to claim 2, characterized in that: One of the active component and the fixed component is provided with a limiting groove, and the other is provided with an elastic limiting protrusion. When the active member presses the holding member to a predetermined position via the driven member, the limiting protrusion engages with the limiting groove to restrict the displacement of the active member relative to the fixed member.

4. The fixation device for instruments according to claim 3, characterized in that: The active component is connected to a drive handle.

5. The instrument fixation device according to claim 1, characterized in that: One of the outer wall of the device fixing part and the inner wall of the holding member has a holding protrusion, and the other has a holding groove that is adapted to the holding protrusion.

6. The instrument fixation device according to claim 1, characterized in that: It also includes a base to which the fastener is rotatably connected.

7. The instrument fixation device according to claim 6, characterized in that: One of the fastener and the base has an arc-shaped groove, and the other has a pin placed in the groove; The fastener is rotatably connected via the pin and the groove.

8. The instrument fixation device according to claim 6, characterized in that: The base is equipped with a damping unit, which applies a predetermined resistance to the fixing member during rotation.

9. The fixation device for instruments according to claim 8, characterized in that: The damping unit is an elastic component. During the rotation of the fixed member, the damping unit is compressed by the fixed member and is in a state of deformation stress.

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