Ultra-minimally invasive compound forceps with multi-state automatic locking function

Abstract

The application discloses a kind of supermicro invasive composite forceps with multi-state automatic locking function, including composite forceps operating handle, composite forceps outer rod, composite forceps inner rod, composite forceps head, composite forceps pull rope, composite forceps buckle ring, composite forceps limiting structure and composite forceps elastic reset piece, wherein: one end of the composite forceps inner rod is connected with the composite forceps operating handle, the other end is provided with the composite forceps head, the composite forceps pull rope is connected between the composite forceps operating handle and the composite forceps head, for driving the composite forceps head to realize opening and closing action when operating the composite forceps operating handle;The composite forceps outer rod is sleeved on the outer side of the composite forceps inner rod, and can move along the axial direction relative to the composite forceps inner rod;The composite forceps limiting structure is arranged on the composite forceps inner rod and / or the composite forceps outer rod, and is provided with a plurality of first limiting positions and second limiting positions along the axial direction.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a minimally invasive composite forceps with multi-state automatic locking function. Background Technology

[0002] Surgical aspirators are commonly used medical devices during surgery. Their main function is to continuously or intermittently aspirate blood, tissue fluid, or other fluids from the surgical field to maintain a clear surgical field. Existing surgical aspirators typically include a suction head, a negative pressure tubing, and a negative pressure source. Their basic structure involves creating negative pressure at the suction head through the negative pressure source, thereby achieving the aspiration of fluids or tissue debris.

[0003] In practical clinical applications, especially in delicate surgeries such as neurosurgery and nasal endoscopy, the control of suction power is extremely important. On the one hand, insufficient suction power can lead to delayed removal of fluid from the surgical field, affecting the surgeon's field of vision; on the other hand, excessive suction power may damage surrounding normal tissues and even cause irreversible surgical risks. Therefore, surgeons often need to adjust the suction power according to the actual situation during surgery.

[0004] Currently, the most common method for adjusting suction strength in clinical practice relies on setting an adjustment hole in the suction head or suction tubing. The surgeon then uses their finger to block or release this hole, altering the effective flow area of ​​the suction channel and thus indirectly adjusting the suction force. However, this method has significant drawbacks: First, the adjustment precision depends heavily on the surgeon's experience and finger manipulation, making it difficult to achieve stable and repeatable suction flow control. Second, in certain surgical scenarios, such as endoscopic nasal surgery or neurosurgical procedures requiring two-handed manipulation, the adjustment hole can easily be blocked by other instruments, tissues, or the surgical environment, preventing the surgeon from adjusting the suction strength promptly and effectively. Third, prolonged reliance on finger blocking can easily lead to surgical fatigue, affecting the continuity and safety of the surgery.

[0005] Therefore, how to provide a surgical aspirator that is compact in structure, easy to operate, and can achieve stable and graded controllable aspiration flow during surgery has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To address the problems of existing surgical aspirators where suction intensity adjustment relies on finger blocking, has low adjustment precision, and is easily affected by the surgical environment, the present invention aims to provide a surgical aspirator with flow regulation function. By setting a rotatable flow regulation structure in the aspirator body and using a graduated drive method, stable and graded adjustment of suction flow can be achieved, so that doctors can conveniently and reliably control suction intensity without changing the operation of the suction head.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A minimally invasive composite forceps with multi-state automatic locking function includes a composite forceps operating handle, a composite forceps outer rod, a composite forceps inner rod, a composite forceps head, a composite forceps pull cord, a composite forceps locking ring, a composite forceps limiting structure, and a composite forceps elastic reset component. Specifically: one end of the composite forceps inner rod is connected to the composite forceps operating handle, and the other end is provided with the composite forceps head; the composite forceps pull cord connects the composite forceps operating handle and the composite forceps head, and is used to drive the composite forceps head to open and close when the composite forceps operating handle is operated; the composite forceps outer rod is sleeved on the outside of the composite forceps inner rod and can move axially relative to the composite forceps inner rod; the composite forceps limiting structure is provided on the composite forceps inner rod and / or the composite forceps outer rod, and has several first limiting positions and second limiting positions along the axial direction; the composite forceps locking ring is sleeved on the composite forceps outer rod and / or... The outer side of the inner rod of the composite clamp can engage with the limiting structure of the composite clamp under the action of the elastic reset member, thereby limiting the relative axial position of the outer rod and the inner rod of the composite clamp. When the clamp locking ring engages with the first limiting position, the outer rod and the inner rod are in a first stable working state. When the clamp locking ring engages with the second limiting position, the outer rod and the inner rod are in a second stable working state. Furthermore, after applying an axial external force to the clamp locking ring to disengage it from the limiting structure, the outer rod can switch to another working state relative to the inner rod. After the external force is released, the clamp locking ring automatically engages with the corresponding limiting structure of the composite clamp under the action of the elastic reset member, for automatic identification and locking of multiple states.

[0008] Furthermore, the first stable working state is a puncture working state, in which the distal end of the outer rod of the composite clamp extends axially beyond the end of the clamp head of the composite clamp; the second stable working state is a clamp head operating state, in which the clamp head of the composite clamp extends axially beyond the distal end of the outer rod of the composite clamp.

[0009] Furthermore, the feature is that the composite clamp limiting structure is at least one of an annular limiting groove, an annular step, or a limiting part arranged in multiple axial intervals on the outer surface of the inner rod of the composite clamp.

[0010] Furthermore, it is characterized by: The composite clamp locking ring is an integral ring or an open ring structure, with at least one locking part with elastic deformation capability provided on its inner or outer side, for locking and engaging with the composite clamp limiting structure.

[0011] Furthermore, the feature is that the composite clamp elastic reset component is a compression spring, elastic ring, wave spring, or integrated elastic structure disposed between the composite clamp buckle ring and the outer rod or inner rod of the composite clamp.

[0012] Furthermore, it is characterized by: The outer side of the composite clamp locking ring is provided with a pull part that protrudes radially outward, which is used by the operator to pull the composite clamp locking ring axially during use to release its locking state with the composite clamp limiting structure.

[0013] Furthermore, it is characterized by: The composite clamp limiting structure has more than two limiting positions along the axial direction, so that the outer rod of the composite clamp and the inner rod of the composite clamp can form more than two stable working states.

[0014] Furthermore, the feature is that the snapping method between the composite clamp buckle ring and the composite clamp limiting structure is either radial snapping or axial snapping.

[0015] Furthermore, it is characterized by: The distal end of the outer rod of the composite clamp is configured with a puncture-capable tip structure for puncturing tissue in the first stable working state.

[0016] Furthermore, the feature is that the composite clamp buckle ring, the composite clamp limiting structure, and the composite clamp elastic reset component together constitute an axial multi-state automatic locking mechanism, enabling the composite clamp to maintain stable locking under different working conditions without continuous external force.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: This invention achieves stable regulation of suction flow by incorporating a rotatable flow adjustment disc inside the surgical aspirator and utilizing the superposition relationship between the variable cross-section adjustment opening and the lateral flow adjustment opening. This avoids the instability and operator fatigue problems associated with traditional methods that rely on blocking the adjustment holes with fingers. Furthermore, the indexing drive method ensures that each adjustment operation corresponds to a specific flow change, which helps doctors quickly and accurately control the suction force during surgery, thereby improving the safety and reliability of the surgical procedure. Attached Figure Description

[0018] Figure 1 A first side view of a surgical suction device with flow regulation function; Figure 2 A second-side view of a surgical suction device with flow regulation function; Figure 3 A third-side view of a surgical suction device with flow regulation function; Figure 4 This is a partial schematic diagram of a surgical suction device with flow regulation function. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the following embodiments are only used to illustrate the technical solutions of the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0020] As attached Figure 1 To be continued Figure 4 As shown, a surgical aspirator with flow regulation function includes an aspirator housing 1. The aspirator housing 1 is an integral box-shaped structure, with an internal mounting cavity for accommodating various functional components. One end of the aspirator housing 1 is provided with a negative pressure connection interface 2, which is used to connect to an external negative pressure source through a pipeline; the other end of the aspirator housing 1 is provided with a suction head connection interface 3, which is used to connect a surgical aspirator head. The negative pressure connection interface 2 and the suction head connection interface 3 are arranged along the same axis, so that the aspirator forms a linear main suction path during use.

[0021] The suction device housing 1 has a main suction channel 4 inside, which connects the negative pressure connection interface 2 and the suction head connection interface 3. The main suction channel 4 is the main airflow channel during negative pressure suction. In order to adjust the suction flow rate, the side wall of the suction device housing 1 is provided with a flow rate adjustment side opening 5 that communicates with the main suction channel 4. This flow rate adjustment side opening 5 is used to introduce and adjust the airflow path.

[0022] Inside the suction device housing 1, near the flow adjustment opening 5, is a rotatable flow adjustment disc 6. The flow adjustment disc 6 is mounted inside the suction device housing 1 via a rotating shaft and can rotate relative to the suction device housing 1 about the rotating shaft. The flow adjustment disc 6 has a variable cross-section adjustment opening 7, which extends along the circumference of the flow adjustment disc 6, and its opening width gradually changes from one end to the other along the direction of rotation.

[0023] When the flow regulating disc 6 rotates, the variable cross-section regulating opening 7 sweeps across the area below the flow regulating side opening 5, creating overlapping flow areas of different sizes between the variable cross-section regulating opening 7 and the flow regulating side opening 5. By changing this overlapping flow area, the effective negative pressure flow rate within the main suction channel 4 can be altered, thereby regulating the suction force. For example, when the area with a smaller opening width in the variable cross-section regulating opening 7 is located below the flow regulating side opening 5, the suction flow rate within the main suction channel 4 is smaller; conversely, when the area with a larger opening width in the variable cross-section regulating opening 7 is located below the flow regulating side opening 5, the suction flow rate within the main suction channel 4 increases accordingly.

[0024] In this embodiment, the variable cross-section adjustment opening 7 can completely avoid the flow adjustment side opening 5 at one of the rotation limit positions of the flow adjustment disk 6, so that the flow adjustment side opening 5 is blocked by the solid part on the flow adjustment disk 6, thereby keeping the suction flow of the main suction channel 4 in a closed or basically closed state to meet the need for suction cessation during the operation.

[0025] To facilitate operation and adjustment by the doctor during surgery, an operation button 8 is provided on the outside of the suction device housing 1. The operation button 8 is connected to a dividing drive mechanism 9 located inside the suction device housing 1. The dividing drive mechanism 9 is used to drive the flow adjustment disk 6 to rotate around its rotation axis by a preset angle each time the operation button 8 is pressed, thereby switching the flow adjustment disk 6 between multiple stable adjustment positions.

[0026] In terms of specific structure, the indexing drive mechanism 9 can adopt a ratchet-type indexing structure, so that the flow regulating disk 6 rotates only in one direction during the adjustment process and remains in the corresponding rotation position after the operation button 8 is released. The operation button 8 is connected to the suction device housing 1 through an elastic reset member 10. The elastic reset member 10 is used to automatically reset the operation button 8 after it is released, so that the next adjustment operation can be performed.

[0027] With the above structure, the present invention integrates the suction flow adjustment function into the suction device body, so that doctors can conveniently and reliably adjust the suction strength in stages without blocking the suction head or adjustment hole with their fingers during the operation. It is especially suitable for surgical scenarios with high requirements for suction control.

[0028] The above description is only a preferred embodiment of the present invention. For those skilled in the art, various equivalent modifications or substitutions can be made to the specific structural form without departing from the overall concept of the present invention, and all such equivalent modifications or substitutions should fall within the protection scope of the present invention.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A minimally invasive composite forceps with multi-state automatic locking function, characterized in that, The compound clamp includes a compound clamp operating handle (1), a compound clamp outer rod (2), a compound clamp inner rod (3), a compound clamp head (4), a compound clamp pull rope (5), a compound clamp locking ring (6), a compound clamp limiting structure (7), and a compound clamp elastic reset component (8). One end of the compound clamp inner rod (3) is connected to the compound clamp operating handle (1), and the other end is provided with the compound clamp head (4). The compound clamp pull rope (5) connects the compound clamp operating handle (1) and the compound clamp head (4) for... When the operating handle (1) of the compound clamp is operated, the clamp head (4) is driven to open and close; the outer rod (2) of the compound clamp is sleeved on the outside of the inner rod (3) of the compound clamp and can move axially relative to the inner rod (3); the limiting structure (7) of the compound clamp is provided on the inner rod (3) and / or the outer rod (2) of the compound clamp, and has several first limiting positions and second limiting positions along the axial direction; the clamp locking ring (6) of the compound clamp is sleeved on the outer rod (2) and / or the inner rod (3) of the compound clamp. The outer side of the inner rod (3) of the composite clamp is engaged with the limiting structure (7) of the composite clamp under the action of the elastic reset member (8) of the composite clamp, so as to limit the relative axial position of the outer rod (2) of the composite clamp and the inner rod (3) of the composite clamp; wherein, when the clamp buckle ring (6) of the composite clamp is engaged with the first limiting position, the outer rod (2) of the composite clamp and the inner rod (3) of the composite clamp are in a first stable working state; when the clamp buckle ring (6) of the composite clamp is engaged with the second limiting position, the outer rod (2) of the composite clamp and the inner rod (3) of the composite clamp are in a first stable working state. The rod (2) and the inner rod (3) of the composite clamp are in a second stable working state; and after applying an axial external force to the composite clamp buckle ring (6) to make it disengage from the composite clamp limiting structure (7), the outer rod (2) of the composite clamp can switch to another working state relative to the inner rod (3) of the composite clamp, and after the external force is released, the composite clamp buckle ring (6) automatically engages with the corresponding composite clamp limiting structure (7) under the action of the composite clamp elastic reset member (8), for automatic identification and automatic locking of multiple states.

2. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The first stable working state is the puncture working state, in which the distal end of the outer rod (2) of the composite clamp extends axially beyond the end of the clamp head (4) of the composite clamp; the second stable working state is the clamp head operation state, in which the clamp head (4) of the composite clamp extends axially beyond the distal end of the outer rod (2) of the composite clamp.

3. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The composite clamp limiting structure (7) is at least one of the following: an annular limiting groove, an annular step, or a limiting part arranged in multiple axial intervals on the outer surface of the inner rod (3) of the composite clamp.

4. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The composite clamp buckle ring (6) is an overall ring or open ring structure, and at least one snap-fit ​​part with elastic deformation capability is provided on its inner or outer side for snap-fit ​​engagement with the composite clamp limiting structure (7).

5. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The composite clamp elastic reset component (8) is a compression spring, elastic ring, wave spring, or integrated elastic structure disposed between the composite clamp buckle ring (6) and the outer rod (2) or the inner rod (3) of the composite clamp.

6. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The outer side of the composite clamp locking ring (6) is provided with a pull part that protrudes radially outward, which is used by the operator to pull the composite clamp locking ring (6) axially during use to release its locking state with the composite clamp limiting structure (7).

7. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The composite clamp limiting structure (7) has more than two limiting positions along the axial direction, so that the outer rod (2) of the composite clamp and the inner rod (3) of the composite clamp can form more than two stable working states.

8. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The snap-fitting method between the composite clamp snap ring (6) and the composite clamp limiting structure (7) is either radial snap-fitting or axial snap-fitting.

9. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The distal end of the composite clamp outer rod (2) is configured with a tip structure with puncture function, which is used to puncture tissue in the first stable working state.

10. The minimally invasive composite forceps with multi-state automatic locking function according to claim 1, characterized in that: The composite clamp buckle ring (6), the composite clamp limiting structure (7), and the composite clamp elastic reset member (8) together constitute an axial multi-state automatic locking mechanism, which enables the composite clamp to maintain stable locking under different working conditions without continuous external force.

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