Endoscope and control assembly thereof

Abstract

The utility model relates to a control assembly of an endoscope. The control assembly comprises a shell, a reel, an elastic piece, a conical friction cylinder and a control part. The reel, the elastic piece and the conical friction cylinder are located in the shell. The control part is located outside the shell and rotationally connected with the shell, and the control part is connected to the reel and used for driving the reel to rotate. The conical friction cylinder is provided with an inner conical surface, the reel is provided with an outer conical surface, and the outer conical surface is sleeved with the inner conical surface. The conical friction cylinder is sleeved with the elastic piece, one end of the elastic piece abuts against the inner wall of the shell, and the other end of the elastic piece abuts against the peripheral face of the conical friction cylinder so that the inner conical face can abut against the outer conical face. According to the control assembly of the endoscope, the self-locking damping structure of the reel is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an endoscope and its operating component. Background Art

[0002] Clinically, using an endoscope for examination and treatment is currently the most commonly used minimally invasive diagnosis and treatment method. A medical endoscope only needs to utilize the natural orifice of the human body or make a small hole when necessary to reach the designated position, which causes less damage to the patient.

[0003] Currently, endoscopes are divided into rigid endoscopes and flexible endoscopes. The flexible endoscope in the prior art generally includes a distal end component, a bending part, an insertion part, and an operating component connected in sequence. The operating component includes a housing, a wire winding wheel located inside the housing, an operating part arranged on the housing, etc. A traction wire is wound around the wire winding wheel, and the distal end of the traction wire is connected to the bending part. The operating part is coaxially connected to the wire winding wheel, and by rotating the operating part, the wire winding wheel can be driven to rotate, so as to drive the bending part to bend, and further drive the distal end component to adjust the angle.

[0004] In some technical solutions, a damping structure is arranged inside the housing of the operating component. The damping structure is used to apply a damping force to the wire winding wheel, so that the wire winding wheel can be self-locked at any rotating position, thereby realizing stepless locking of the bending part at any bending angle, that is, realizing locking of the distal end component at any angle. However, in the operating component of the endoscope in the prior art, the damping structure has many components and a complex structure. Summary of the Utility Model

[0005] Based on this, in view of the problem that the damping structure of the operating component of the endoscope in the prior art has many components and a complex structure, it is necessary to provide an endoscope and its operating component.

[0006] An operating component of an endoscope, the operating component includes: a housing, a wire winding wheel, an elastic member, a conical friction cylinder, and an operating part;

[0007] The wire winding wheel, the elastic member, and the conical friction cylinder are located inside the housing;

[0008] The operating part is located outside the housing and is rotatably connected to the housing, and the operating part is connected to the wire winding wheel to drive the wire winding wheel to rotate;

[0009] The conical friction cylinder has an inner conical surface, the wire winding wheel has an outer conical surface, and the inner conical surface is sleeved on the outer conical surface;

[0010] The elastic member is sleeved outside the conical friction cylinder. One end of the elastic member abuts against the inner wall of the housing, and the other end abuts against the outer peripheral surface of the conical friction cylinder, so that the inner conical surface abuts against the outer conical surface.

[0011] In one embodiment, one end of the operating part extends into the housing and is coaxially connected to the wire winding wheel.

[0012] In one embodiment, along the direction in which the wire winding wheel approaches the operating part, the outer diameter of the outer conical surface gradually decreases, and the inner diameter of the inner conical surface gradually decreases.

[0013] In one embodiment, an annular groove is provided on the outer peripheral surface of the conical friction cylinder, and one end of the elastic member is engaged with the annular groove.

[0014] In one embodiment, the end of the operating part extending into the housing has a connecting shaft; one end of the wire winding wheel close to the operating part has a connecting sleeve, and the connecting shaft is inserted into the connecting sleeve;

[0015] Wherein, the operating assembly further includes a fastener, and the fastener connects the connecting shaft and the connecting sleeve.

[0016] In one embodiment, the fastener is a bolt, which includes a screw rod and a bolt head. One end of the screw rod away from the bolt head passes through the bottom of the connecting sleeve and is threadedly connected to the connecting shaft, and the bolt head abuts against the outer surface of the bottom of the connecting sleeve.

[0017] In one embodiment, the end of the operating part extending into the housing has a connecting shaft; one end of the wire winding wheel close to the operating part has a connecting sleeve, and the connecting shaft is inserted into the connecting sleeve;

[0018] A protrusion is provided on the outer peripheral surface of the connecting shaft, and a clamping groove is provided on the inner peripheral surface of the connecting sleeve, and the protrusion is engaged with the clamping groove.

[0019] In one embodiment, a plurality of guiding ribs are circumferentially and spacedly arranged on the outer peripheral surface of the conical friction cylinder, guiding grooves corresponding to the guiding ribs one by one are provided on the inner wall of the housing, and each guiding rib is movably engaged with the corresponding guiding groove along the axial direction of the conical friction cylinder.

[0020] In one embodiment, an arc-shaped wire winding part extending in the circumferential direction is provided on the wire winding wheel, a wire winding hole is provided in the arc-shaped wire winding part, and the wire winding hole penetrates through both ends of the arc-shaped wire winding part; a wire winding groove is provided on the outer side surface of the arc-shaped wire winding part, and the wire winding groove penetrates through both ends of the arc-shaped wire winding part.

[0021] One embodiment of the present application further provides an endoscope, and the endoscope includes the operating assembly according to any one of the above embodiments.

[0022] When the doctor adjusts the angle of the distal component using the manipulation assembly of the above endoscope, an external force can be applied to rotate the manipulation part. The manipulation part drives the wire winding wheel to overcome the friction force between the inner conical surface and the outer conical surface. Thus, the wire winding wheel rotates and drives the wound traction wire to move, so as to drive the bending part of the endoscope to rotate and adjust the angle of the distal component. When the distal component is adjusted to the expected angle, the doctor can release the manipulation part and remove the external force. At this time, the elastic force of the elastic part makes the conical friction cylinder abut against the wire winding wheel, that is, the inner conical surface abuts against the outer conical surface. Thus, the friction force between the inner conical surface and the outer conical surface can prevent the wire winding wheel from rotating, making the wire winding wheel self-lock, and the distal component is locked at this expected angle. In this way, the wire winding wheel can self-lock at any rotation position, realizing the locking of the distal component at any angle. It can be seen that in the manipulation assembly of the endoscope in the embodiment of the present application, the damping structure for the self-locking of the wire winding wheel is simple. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a manipulation assembly of an embodiment.

[0024] Figure 2 is Figure 1 an exploded view of the structure of the manipulation assembly shown.

[0025] Figure 3 is Figure 1 another view of the manipulation assembly shown.

[0026] Figure 4 is Figure 3 an exploded view of the structure of

[0027] Figure 5 is Figure 1 a sectional view of the manipulation assembly shown.

[0028] Description of the Reference Numerals:

[0029] 110, housing; 111, guide groove;

[0030] 120, wire winding wheel; 121, outer conical surface; 122, connecting sleeve; 124, arc-shaped wire winding part; 125, wire winding hole; 126, wire winding groove;

[0031] 130, elastic part;

[0032] 140, conical friction cylinder; 141, inner conical surface; 142, annular groove; 143, guide rib;

[0033] 150, manipulation part; 151, connecting shaft; 152, protrusion;

[0034] 160, fastener; 161, screw; 162, bolt head. Detailed Description of the Embodiment

[0035] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific embodiments of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] In the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0041] Please refer to Figure 1 and Figure 2 One embodiment of the present application provides a manipulation assembly of an endoscope. The manipulation assembly includes: a housing 110, a wire winding wheel 120, an elastic member 130, a conical friction cylinder 140, and a manipulation portion 150.

[0042] The wire winding wheel 120, the elastic member 130 and the conical friction cylinder 140 are located inside the housing 110.

[0043] The manipulation portion 150 is located outside the housing 110 and is rotatably connected to the housing 110, and the manipulation portion 150 is connected to the wire winding wheel 120 for driving the wire winding wheel 120 to rotate.

[0044] Combined with Figure 3 and Figure 4 The conical friction cylinder 140 has an inner conical surface 141, the wire winding wheel 120 has an outer conical surface 121, and the inner conical surface 141 of the conical friction cylinder 140 is sleeved on the outer conical surface 121 of the wire winding wheel 120.

[0045] The elastic member 130 is sleeved outside the conical friction cylinder 140. One end of the elastic member 130 abuts against the inner wall of the housing 110, and the other end abuts against the outer peripheral surface of the conical friction cylinder 140, so that the inner conical surface 141 abuts against the outer conical surface 121. Since the conical friction cylinder 140 is conical, its outer peripheral surface is also a conical surface, and the elastic member 130 is sleeved on the conical outer peripheral surface of the conical friction cylinder 140.

[0046] When the doctor adjusts the angle of the distal component using the manipulation assembly of the above endoscope, an external force can be applied to rotate the manipulation portion 150. The manipulation portion 150 drives the wire winding wheel 120 to overcome the frictional force between the inner conical surface 141 and the outer conical surface 121. Thus, the wire winding wheel 120 rotates and drives the wound traction wire (not shown) to move, so as to drive the bending portion (not shown) of the endoscope to rotate and adjust the angle of the distal component. When the distal component is adjusted to the desired angle, the doctor can release the manipulation portion 150 and remove the external force. At this time, the elastic force of the elastic member 130 causes the conical friction cylinder 140 to abut against the wire winding wheel 120, that is, the inner conical surface 141 abuts against the outer conical surface 121. Thus, the frictional force between the inner conical surface 141 and the outer conical surface 121 can prevent the wire winding wheel 120 from rotating, making the wire winding wheel 120 self-locking, and the distal component is locked at this desired angle. In this way, the wire winding wheel can be self-locked at any rotational position, realizing the locking of the distal component at any angle. It can be seen that in the manipulation assembly of the endoscope in the embodiment of the present application, the self-locking damping structure (the elastic member 130 and the conical friction cylinder 140) of the wire winding wheel 120 is simple.

[0047] In one embodiment, one end of the manipulation portion 150 extends into the housing 110 and is coaxially connected to the wire winding wheel 120. Thus, when the manipulation portion 150 rotates, the wire winding wheel 120 rotates synchronously.

[0048] Combined with Figure 5 , in one embodiment, along the direction in which the wire winding wheel 120 approaches the manipulation portion 150, the outer diameter of the outer conical surface 121 gradually decreases, and the inner diameter of the inner conical surface 141 gradually decreases. The elastic member 130 is located between the inner wall of the housing 110 and the conical friction cylinder 140. In this way, the wire winding wheel 120, the elastic member 130, the conical friction cylinder 140, and the manipulation portion 150 are arranged compactly. Moreover, during assembly, the manipulation portion 150 can be rotatably connected to the housing 110 first, then the elastic member 130 is placed in the housing 110, one end of the conical friction cylinder 140 is inserted into the elastic member 130, the wire winding wheel 120 is inserted into the conical friction cylinder 140, and finally the wire winding wheel 120 is fixed to the manipulation portion 150, which is convenient for assembly.

[0049] Refer to Figure 5 , in one embodiment, an annular groove 142 is provided on the outer peripheral surface of the conical friction cylinder 140, and one end of the elastic member 130 is engaged with the annular groove 142. Thus, the elastic member 130 can be reliably abutted against the conical friction cylinder 140, and the elastic member 130 is not easily displaced.

[0050] Specifically in this embodiment, the elastic member 130 is a helical spring. The spring coils at one end of the helical spring are located in the annular groove 142.

[0051] In other embodiments, the elastic member is not limited to a helical spring.

[0052] Refer toFigure 2 , Figure 4 and Figure 5 , in one embodiment, one end of the operating part 150 extending into the housing has a connecting shaft 151. One end of the winding wheel 120 close to the operating part 150 has a connecting sleeve 122, and the connecting shaft 151 is inserted into the connecting sleeve 122.

[0053] Wherein, the operating assembly includes a fastener 160, and the fastener 160 connects the connecting shaft 151 and the connecting sleeve 122, so that the operating part 150 and the winding wheel 120 are fixedly connected.

[0054] Specifically, please refer to Figure 5 , the fastener 160 is a bolt, which includes a screw rod 161 and a bolt head 162. One end of the screw rod 161 away from the bolt head 162 passes through the bottom of the connecting sleeve 122 and is threadedly connected to the connecting shaft 151, and the bolt head 162 abuts against the outer surface of the bottom of the connecting sleeve 122, so that the connecting sleeve 122 and the connecting shaft 151 can be fixedly connected.

[0055] Refer to Figure 2 , Figure 4 and Figure 5 , in one embodiment, one end of the operating part 150 extending into the housing has a connecting shaft 151. One end of the winding wheel 120 close to the operating part 150 has a connecting sleeve 122, and the connecting shaft 151 is inserted into the connecting sleeve 122.

[0056] A protrusion 152 is provided on the outer peripheral surface of the connecting shaft 151, and a card slot (not labeled) is provided on the inner peripheral surface of the connecting sleeve 122. The protrusion 152 cooperates with the card slot, so that the connecting sleeve 122 and the connecting shaft 151 can be clamped tightly and rotate coaxially, and further the operating part 150 and the winding wheel 120 can rotate coaxially.

[0057] In one embodiment, the protrusion 152 can be made of an elastic material, such as rubber, plastic, etc. When the connecting sleeve 122 and the connecting shaft 151 are assembled, the connecting shaft 151 can be inserted into the connecting sleeve 122 through the elastic deformation of the protrusion 152. When the protrusion 152 reaches the position of the card slot, the card slot can allow the protrusion 152 to recover its deformation, providing space for the protrusion 152 to recover its deformation. Thus, the protrusion 152 enters the card slot and is clamped with the card slot.

[0058] In Figure 5In the illustrated embodiment, the connecting sleeve 122 and the connecting shaft 151 are fixed by the fastener 160, and at the same time, the connecting sleeve 122 and the connecting shaft 151 are clamped by the protrusion 152 and the clamping groove. In other embodiments, the connecting sleeve 122 and the connecting shaft 151 can be fixed by the fastener 160 without providing the protrusion 152 and the clamping groove; or the connecting sleeve 122 and the connecting shaft 151 can be clamped by the protrusion 152 and the clamping groove without providing the fastener 160.

[0059] Reference Figure 2 and Figure 4 Referring to FIGS. and, in one embodiment, a plurality of guiding ribs 143 are circumferentially and spacedly arranged on the outer peripheral surface of the conical friction cylinder 140, and guiding grooves 111 corresponding to the guiding ribs 143 one by one are provided on the inner wall of the housing 110. Each guiding rib 143 is movably engaged with the corresponding guiding groove 111 along the axial direction of the conical friction cylinder 140. Thus, through the cooperation of the guiding rib 143 and the guiding groove 111, it is defined that the conical friction cylinder 140 can only move axially relative to the winding wheel 120. Furthermore, during the process that the elastic force of the elastic member 130 drives the conical friction cylinder 140 to abut against the winding wheel 120, the conical friction cylinder 140 can be prevented from tilting and shifting, which is beneficial to the reliable self-locking of the winding wheel 120.

[0060] Reference Figures 1 to 4 Referring to FIGS. and, in one embodiment, the winding wheel 120 is provided with an arc-shaped winding portion 124 extending in the circumferential direction. The arc-shaped winding portion 124 is provided with a winding hole 125. The extending direction of the winding hole 125 is along the extending direction of the arc-shaped winding portion 124, and the winding hole 125 penetrates through both ends of the arc-shaped winding portion 124. A winding groove 126 is provided on the outer side surface of the arc-shaped winding portion 124. The extending direction of the winding groove 126 is along the extending direction of the arc-shaped winding portion 124. The winding groove 126 penetrates through both ends of the arc-shaped winding portion 124.

[0061] When winding the traction wire around the winding wheel 120, one end of the traction wire can be fixed, and then the traction wire is passed through the winding hole 125. After the traction wire passes out of the winding hole 125, it is wound in the winding groove 126. After passing through the winding groove 126, it is inserted into the winding hole again. In this way, the traction wire can be wound around the arc-shaped winding portion 124 by circulating. Through the winding hole 125 and the winding groove 126 on the arc-shaped winding portion 124 of this embodiment, it is convenient to wind the traction wire around the winding wheel 120.

[0062] One embodiment of the present application further provides an endoscope, and the endoscope includes the operating assembly in any one of the above embodiments.

[0063] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0064] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A manipulation assembly for an endoscope, characterized in that: The control assembly comprises: a housing, a winding wheel, an elastic member, a conical friction cylinder and a control part; The winding wheel, the elastic member and the conical friction cylinder are located in the housing; The operating part is located outside the housing and is rotatably connected to the housing, and the operating part is connected to the winding wheel to drive the winding wheel to rotate; The conical friction cylinder has an inner conical surface, the winding wheel has an outer conical surface, and the inner conical surface is sleeved on the outer conical surface; The elastic member is sleeved outside the conical friction cylinder, one end of the elastic member abuts against the inner wall of the outer shell, and the other end abuts against the outer peripheral surface of the conical friction cylinder, so that the inner conical surface abuts against the outer conical surface.

2. The operating assembly according to claim 1, characterized in that One end of the operating part extends into the housing and is coaxially connected to the winding wheel.

3. The operating assembly according to claim 2, characterized in that Along the direction where the winding wheel approaches the operating part, the outer diameter of the outer conical surface gradually decreases, and the inner diameter of the inner conical surface gradually decreases.

4. The manipulation assembly according to claim 1, characterized in that An annular groove is arranged on the outer peripheral surface of the conical friction cylinder, and one end of the elastic member is matched with the annular groove.

5. The manipulation assembly according to claim 1, characterized in that: The end of the operating part extending into the housing has a connecting shaft; the end of the winding wheel close to the operating part has a connecting sleeve, and the connecting shaft is inserted into the connecting sleeve; Wherein, the operating assembly further comprises a fastener, and the fastener connects the connecting shaft and the connecting sleeve.

6. The operating assembly according to claim 5, characterized in that The fastener is a bolt, which includes a screw rod and a bolt head. One end of the screw rod away from the bolt head passes through the bottom of the connecting sleeve and is threadedly connected to the connecting shaft. The bolt head abuts against the outer surface of the bottom of the connecting sleeve.

7. The manipulation assembly according to claim 1, characterized in that The end of the operating part extending into the housing has a connecting shaft; the end of the winding wheel close to the operating part has a connecting sleeve, and the connecting shaft is inserted into the connecting sleeve; The outer circumferential surface of the connecting shaft is provided with a protrusion, and the inner circumferential surface of the connecting sleeve is provided with a clamping groove, and the protrusion cooperates with the clamping groove.

8. The manipulation assembly according to claim 1, characterized in that A plurality of guide ribs are arranged at intervals along the circumferential direction on the outer circumferential surface of the conical friction cylinder, and guide grooves corresponding to the guide ribs are arranged on the inner wall of the shell. Each guide rib cooperates with the corresponding guide groove along the axial movement of the conical friction cylinder.

9. The manipulation assembly according to claim 1, characterized in that The winding wheel is provided with an arc-shaped winding portion extending in the circumferential direction, the arc-shaped winding portion is provided with a winding hole, and the winding hole passes through both ends of the arc-shaped winding portion; the outer side surface of the arc-shaped winding portion is provided with a winding groove, and the winding groove passes through both ends of the arc-shaped winding portion.

10. An endoscope, characterized in that: The invention comprises the manipulation assembly according to any one of claims 1 to 9.

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