A plastic surgical instrument

Abstract

The present invention relates to the technical field of medical devices, and in particular to a plastic surgical instrument. The present invention provides a plastic surgical instrument, comprising a control part and a working part and an extension part connecting the control part and the working part, the working part comprising a first inner pull rod and a clamp seat, the clamp seat is fixedly connected with an execution component for surgical operation, the first inner pull rod can make a reciprocating linear motion along the axial direction of the clamp seat, the control part comprises a second inner pull rod, the first inner pull rod and the second inner pull rod are connected to each other, and the first inner pull rod can make a relatively independent rotational motion along the second inner pull rod, the plastic surgical instrument can achieve 360-degree shaping needs and meet the needs of clinical shaping at various angles.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a plastic surgical instrument suitable for single-port laparoscope. Background Art

[0002] Since its introduction, laparoscopic surgery technology has been an important development in the medical field. Especially in the field of minimally invasive surgery, it has greatly improved the patient's surgical experience by reducing surgical trauma and speeding up recovery time. With the continuous advancement of technology, single-port laparoscopes have been more widely developed clinically. However, in clinical surgery, due to the single-port surgery, multiple instruments enter from the same channel, and there is a high probability that multiple instruments will fight with each other, and even some surgical areas cannot reach the working end of the instrument, thereby increasing the difficulty of the operation. For example, patent CN 217853150 U proposed the concept of a plastic instrument, but did not publish a more detailed internal implementation plan. At the same time, the shaping instrument is first shaped in vitro during clinical operation. At this time, if the angle of the instrument head is relatively fixed, during the shaping process, the angle position of the instrument head is relatively random and the direction cannot be accurately controlled, thereby affecting the actual operation of the instrument after entering the human body and failing to achieve the desired effect.

[0003] It can be seen from the above that the solutions in the prior art all have some unresolved problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a plastic surgical instrument for solving the problem of some angle areas being difficult to reach in single-port surgery, thereby providing a plastic instrument solution.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A plastic surgical instrument, characterized in that it includes a control part and a working part and an insertion part connecting the control part and the working part, the working part includes a first inner pull rod and a clamp seat, the clamp seat is fixedly connected with an execution component for surgical operation, the first inner pull rod can make a reciprocating linear motion along the axial direction of the clamp seat, the control part includes a second inner pull rod, the second inner pull rod is made of a plastic material, the first inner pull rod and the second inner pull rod are connected to each other, and the first inner pull rod can make a relatively independent rotational motion along the second inner pull rod, the working part includes a locking cap, the locking cap is connected to the insertion part by internal and external threads, and during the connection process, the locking cap drives the clamp seat to approach the insertion part and complete the connection with the insertion part, and when the threaded connection is reversed and loosened, the clamp seat and the insertion part are relatively loosened and separated.

[0007] Furthermore, the locking cap includes an inner step of the locking cap, and the clamp seat includes an outer step of the clamp seat. During the process of locking the locking cap and the insertion part through internal and external threaded connection, the inner step of the locking cap contacts and applies force to the outer step of the clamp seat, pushing the clamp seat to be in close contact with the insertion part.

[0008] Furthermore, the clamp seat is driven by the locking cap to connect with the insertion portion by surface contact, and the clamp seat is fixed in the axial direction of the insertion portion without rotation under a certain external force by mutual friction.

[0009] Furthermore, a first elastic component is installed between the clamp seat and the locking cap. When driven by the locking cap, the first elastic component increases the surface contact friction coefficient between the insertion portion and the clamp seat, respectively, and relies on the mutual friction force to achieve that the clamp seat is fixed in the axial direction relative to the insertion portion and does not rotate under a certain external force.

[0010] Further, the side of the clamp seat facing the insertion portion includes a plurality of protrusions, the protrusions are distributed in a circle along the axis of the clamp seat, and the side of the insertion portion facing the clamp seat includes at least one groove, and the protrusions and the grooves can be nested or separated from each other; or the side of the clamp seat facing the insertion portion includes a plurality of grooves, the grooves are distributed in a circle along the axis of the clamp seat, and the side of the insertion portion facing the clamp seat includes at least one protrusion, and the protrusions and the grooves can be nested or separated from each other.

[0011] A second elastic component is included between the clamp seat and the insertion portion, the protrusion and the groove are separated from each other under the action of the second elastic component, and the clamp seat can perform free axial rotation relative to the insertion portion.

[0012] Furthermore, the first elastic component includes a rubber pad or a rubber ring or a metal spring.

[0013] Furthermore, the second elastic component is a cylindrical spring or an O-shaped rubber ring.

[0014] Furthermore, the extending portion includes a hollow shaping tube that can be bent and shaped 360 degrees, and the shaping tube includes a first spiral component and a second spiral component, and the first spiral component and the second spiral component are interwoven and combined with each other.

[0015] Furthermore, the cross-section of the base body of the first spiral component is circular with a diameter of D, the cross-section of the base body of the second spiral component is square with an axial spiral pitch of d, and d<D.

[0016] Furthermore, the control part includes a handle seat, a handle shaft, a handle movable plate, a handle movable plate shaft, and a handle. The second inner pull rod is connected to the handle movable plate via the handle movable plate shaft. When the handle makes a reciprocating rotational motion along the handle shaft, the handle movable plate rotates along the handle movable plate shaft, thereby driving the second inner pull rod to make a linear reciprocating motion along the axial direction.

[0017] A shaping method of a shapeable surgical instrument, comprising the aforementioned shapeable surgical instrument, and the specific steps are as follows:

[0018] S1: Hold the instrument and shape the insertion part according to the surgical requirements;

[0019] S2: Observe the angle of the working part corresponding to the actuator and the relative angle of the control part, and determine whether it meets the operator's operating habits;

[0020] S3: If the conditions are met, the shaping is completed; if not, loosen the locking cap, rotate the working part actuator to the required angle position, and then tighten the locking cap to complete the shaping.

[0021] S4: During the surgical operation, if it is necessary to reshape the insertion portion and adjust the angle of the working portion, the surgical instrument is removed and reshaped and the angle is adjusted according to the above steps S1-S3.

[0022] Through the above technical solution, compared with the prior art, the present invention has the following beneficial effects:

[0023] The shapeable surgical instrument provided by the present invention can, on the one hand, support the real-time 360-degree shaping demand of the insertion part and meet the clinical needs for shaping at various angles; on the other hand, it can meet the adjustment and locking of the working part relative to the insertion part along the axis at various angles. The operating doctor can adjust the angle of the working part quickly and conveniently according to the needs of the operation, and adjust the shape of the shaping tube of the insertion part at the same time, thereby greatly improving the surgical efficiency and reducing the surgical risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A front view of the shapeable surgical instrument of the present invention

[0025] Figure 2 Schematic diagram of the plastic surgical instrument after shaping

[0026] Figure 3 Schematic diagram of the explosion of the plastic surgical instrument of the present invention

[0027] Figure 4 Schematic diagram of the connection between the first inner pull rod and the second inner pull rod of the plastic surgical instrument of the present invention

[0028] Figure 5A partial exploded schematic diagram of the shapeable surgical instrument of the present invention

[0029] Figure 6 A three-dimensional view of the clamp seat of the shapeable surgical instrument of the present invention

[0030] Figure 7 A partially exploded schematic diagram of another perspective of the shapeable surgical instrument of the present invention

[0031] Figure 8 A partial enlarged view of the insertion portion of the plastic surgical instrument of the present invention

[0032] Fig. 9 AA cross-sectional view of the plastic surgical instrument of the present invention

[0033] Fig.10 Schematic diagram of the clamp seat and the insertion part of the plastic surgical instrument of the present invention after being attached

[0034] Fig.11 Schematic diagram of the pliers holder and the insertion part of the shapeable surgical instrument of the present invention after separation

[0035] Fig.12 Schematic diagram of the separation of the clamp seat and the insertion part after the working part of the plastic surgical instrument of the present invention rotates an angle

[0036] Fig.13 Schematic diagram of the shapeable surgical instrument of the present invention after the working part rotates an angle and the clamp seat and the insertion part are fitted together

[0037] Fig.14 A partial cross-sectional view of another embodiment of the plastic surgical instrument of the present invention

[0038] Fig.15 This is an enlarged view of the shaping tube of the shaping surgical instrument of the present invention

[0039] In the figure: control part 10; second inner pull rod 11; pull rod head 112; pull rod neck 111; handle seat 12; handle shaft 13; handle movable plate 14; handle movable plate shaft 15; handle 16; insertion part 20; front end 21 of insertion part; rear end 22 of insertion part; shaping tube 23; first spiral member 231; second spiral member 232; external threaded shaft 24; groove 25; front end face 26 of insertion part; working part 30; pin hole 310; protrusion 311; clamp seat end face 312; clamp seat outer step 313; locking cap 32; internal threaded hole 320; locking cap inner step 321; first inner pull rod 33; first notch 331; second notch 332; clamp head connecting piece 34; clamp head connecting piece 341; first actuator 35; second actuator 351; clamp seat shaft 36; clamp seat 41; clamp seat second groove 411; second elastic member 51. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] like Figure 1 As shown, a plastic surgery instrument comprises a control part 10, a working part 30 and an insertion part 20 connecting the control part 10 and the working part 30. Figure 2 and 3 As shown, the control part 10 includes a second inner pull rod 11, a handle seat 12, a handle shaft 13, a handle movable plate 14, a handle movable plate shaft 15, and a handle 16. The second inner pull rod is made of a plastic material, including but not limited to steel wire, steel rope, non-metallic braided rope or other combination schemes. The second inner pull rod 11 is connected to the handle movable plate 14 through the handle movable plate shaft 15. When the handle 16 performs a reciprocating rotation along the handle shaft 13, the handle movable plate 14 rotates along the handle movable plate shaft 15, thereby driving the second inner pull rod 11 to perform a linear reciprocating motion along the axial direction. The insertion part 20 includes a front end 21 of the insertion part, a rear end 22 of the insertion part, and a shaping tube 23 connecting the front end 21 of the insertion part and the rear end 22 of the insertion part. The shaping tube 23 of the insertion part 20 can be manually shaped and deformed, and the deformed shape can be maintained. At this time, when the handle 16 is opened and closed, even if the shaping tube 23 is in a state after plastic deformation, the execution component on the working part 30 can still be driven to perform the surgical action normally.

[0043] like Figure 4 As shown, the first inner tie rod 33 includes a first notch 331 and a second notch 332, the width of the first notch 331 is smaller than that of the second notch 332, the second inner tie rod 11 includes a tie rod head 112 and a tie rod neck 111, the outer diameter of the tie rod head 112 is larger than the outer diameter of the tie rod neck 111, after the tie rod head 112 is inserted into the second notch 332 and is nearly coaxial, the first inner tie rod 33 and the second inner tie rod 11 are inseparable in the axial direction, and the first inner tie rod 33 can axially rotate relative to the second inner tie rod 11 along the axis.

[0044] like Figures 5 to 9As shown, the working part 30 includes a first inner pull rod 33 and a clamp seat 31, the first inner pull rod 33 can make a reciprocating linear motion along the axial direction of the clamp seat 31, the control part 10 includes a second inner pull rod 11, the working part 30 includes a locking cap 32, the locking cap 32 includes an internal threaded hole 320 and a locking cap internal step 321, the insertion part 20 also includes an external threaded shaft 24, and the clamp seat 31 includes a clamp seat external step 313. The clamp seat 31 is fixedly connected with an actuator for surgical operation, including a first actuator 35 and a second actuator 351, the first actuator 35 is connected to the first inner pull rod 33 through a clamp head connecting piece 34, the second actuator 351 is connected to the first inner pull rod 33 through a clamp head connecting piece 341, and the first actuator 35 and the second actuator 351 are fixedly connected to the clamp seat 31 through a clamp seat rotating shaft 36 inserted into the pin hole 310 of the clamp seat 31.

[0045] The locking cap 32 is connected to the external threaded shaft 24 of the insertion part 20 through internal and external threads, and during the connection process, the inner step 321 of the locking cap contacts and applies force to the outer step 313 of the clamp seat, pushing the clamp seat 31 to closely contact the insertion part 20, and further, the clamp seat end face 312 of the clamp seat 31 is closely contacted to the insertion part front end face 26 of the insertion part 20. When the threaded connection is reversely loosened, the clamp seat end face 312 of the clamp seat 31 and the insertion part front end face 26 of the insertion part 20 are relatively loosened and separated.

[0046] In one of the solutions, the clamp seat end face 312 of the clamp seat 31 also includes a plurality of protrusions 311, and the plurality of protrusions 311 are distributed in a circle along the axis of the clamp seat 31. The front end face 26 of the insertion portion includes at least one groove 25, and the protrusions 311 and the grooves 25 can be nested or separated from each other.

[0047] like Figures 10 to 13 As shown, when the locking cap 32 is hidden and not displayed, when the locking cap 32 reversely drives the clamp seat end face 312 of the clamp seat 31 to be relatively loosened and separated from the front end face 26 of the insertion part 20 through a threaded connection, the protrusion 311 and the groove 25 can also be separated. After the clamp seat 31 is rotated to change the angle of the head actuator of the working part 30, the locking cap 32 is driven to make the clamp seat end face 312 close to the front end face 26 of the insertion part through a threaded connection. At this time, the protrusion 311 and the groove 25 are in a state of being embedded and stuck with each other, thereby completing the angle locking.

[0048] like Fig.14As shown, another solution shows another clamp seat 41, including a second groove 411 of the clamp seat, and a second elastic component 51 is installed in the second groove 411. In this solution, when the locking cap 32 is reversely loosened, the protrusion of the clamp seat 41 and the groove 25 of the insertion part are separated from each other under the action of the second elastic component 51, and the clamp seat 41 can perform free axial rotation relative to the insertion part 20. The process of rotating the clamp seat 41 is smoother than the previous solution, and will not be stuck due to the protrusion and the groove. The second elastic component is a cylindrical spring or an O-type rubber ring.

[0049] The scheme described above adopts a matching scheme of protrusions and grooves, wherein the protrusions are arranged on the end face of the clamp seat, and the grooves are arranged on the end face of the extension part. In the actual implementation plan, the design positions of the protrusions and grooves can be interchanged, that is, the protrusions are arranged on the end face of the extension part, and the grooves are arranged on the end face of the clamp seat, all without departing from the design ideas advocated by the present invention.

[0050] The above-mentioned solution adopts the matching solution of protrusion and groove, the purpose of which is to ensure that after locking, the angle between the clamp seat and the insertion part is locked and stable and reliable. However, other solutions can also be adopted, such as: directly relying on the surface contact friction between the clamp seat end face 312 and the front end face 26 of the insertion part to prevent relative rotation. u A first elastic component, such as a rubber pad or a rubber ring or a metal spring, can also be installed between the clamp seat end face 312 and the front end face 26 of the insertion part. Under the external force, the first elastic component increases the surface contact friction coefficient, thereby ensuring that the clamp seat is fixed and does not rotate relative to the axial direction of the insertion part.

[0051] like Fig.15 As shown, the insertion portion 21 includes a hollow shaping tube 23 that can be bent and shaped 360 degrees, and the shaping tube 23 includes a first spiral member 231 and a second spiral member 232, and the first spiral member 231 and the second spiral member 232 are interwoven and combined with each other. The base cross-section of the first spiral member 231 is circular with a diameter of D, and the base cross-section of the second spiral member 232 is square, and the spiral pitch in the axial direction is d, and d<D. Under this scheme, the shaping tube 23 realizes the bending resistance of the shaping tube 23, that is, the ability to maintain the shape in the state of plastic deformation after shaping, by changing the diameter D of the first spiral member 231 and the base cross-section height H of the second spiral member 232, the hardness of the base material, and the type of material, so as to meet the actual clinical needs.

[0052] A shaping method of a shapeable surgical instrument, comprising the shapeable surgical instrument of the above embodiment, and the specific steps are as follows:

[0053] S1: Hold the instrument and shape the insertion part according to the surgical requirements;

[0054] S2: Observe the angle of the working part corresponding to the actuator and the relative angle of the control part, and determine whether it meets the operator's operating habits;

[0055] S3: If the conditions are met, the shaping is completed; if not, loosen the locking cap, rotate the working part actuator to the required angle position, and then tighten the locking cap to complete the shaping.

[0056] S4: During the surgical operation, if it is necessary to reshape the insertion portion and adjust the angle of the working portion, the surgical instrument is removed and reshaped and the angle is adjusted according to the above steps S1-S3.

[0057] A person skilled in the art should understand that, taking a scissor-type handle as an example, the control part and the working part execution part of a conventional separation forceps type are used. The scissor-type handle includes two handle ends, and the fingers are inserted into the finger holes of the handle. The handle is opened and closed, and the corresponding separation forceps head is opened and closed. Through the above-mentioned shaping method, various shaping states of the insertion part can be achieved, ensuring that the separation forceps head and the handle are in a relatively parallel state, so that the operator can continue the habit of using conventional instruments. In single-port laparoscopic surgery, the operation of the instrument under laparoscopy is more efficient and safer.

[0058] The present application is not limited to the aforementioned specific embodiments. The present invention extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A plastic surgical instrument, characterized in that: The invention comprises a control part, a working part and an insertion part connecting the control part and the working part, the working part comprises a first inner pull rod and a clamp seat, the clamp seat is fixedly connected with an execution component for surgical operation, the first inner pull rod can make a reciprocating linear motion along the axial direction of the clamp seat, the control part comprises a second inner pull rod, the second inner pull rod is made of a plastic material, the first inner pull rod and the second inner pull rod are connected to each other, and the first inner pull rod can make a relatively independent rotational motion along the second inner pull rod, the working part comprises a locking cap, the locking cap is connected to the insertion part by internal and external threads, and during the connection process, the locking cap The clamp seat is driven to approach the insertion part and complete the connection with the insertion part. When the threaded connection is reversely loosened, the clamp seat and the insertion part are relatively loosened and separated. The clamp seat includes a plurality of protrusions on the side facing the insertion part, and the protrusions are distributed circumferentially along the axis of the clamp seat. The insertion part includes at least one groove on the side facing the clamp seat, and the protrusions and the grooves can be nested or separated from each other; or the clamp seat includes a plurality of grooves on the side facing the insertion part, and the grooves are distributed circumferentially along the axis of the clamp seat. The insertion part includes at least one protrusion on the side facing the clamp seat, and the protrusions and the grooves can be nested or separated from each other.

2. A plastic surgical instrument according to claim 1, characterized in that: The clamp seat is driven by the locking cap to connect with the insertion portion in a surface contact manner, and relies on mutual friction to ensure that the clamp seat is fixed in the axial direction of the insertion portion and does not rotate under a certain external force.

3. A plastic surgical instrument according to claim 1, characterized in that: A first elastic component is installed between the clamp seat and the locking cap. When driven by the locking cap, the first elastic component increases the surface contact friction coefficient between the insertion portion and the clamp seat, and relies on the mutual friction force to ensure that the clamp seat is fixed in the axial direction relative to the insertion portion and does not rotate under a certain external force.

4. A shapeable surgical instrument according to claim 1, characterized in that: A second elastic component is included between the clamp seat and the insertion portion, the protrusion and the groove are separated from each other under the action of the second elastic component, and the clamp seat can perform free axial rotation relative to the insertion portion.

5. A plastic surgical instrument according to claim 3, characterized in that: The first elastic component includes a rubber pad, a rubber ring or a metal spring.

6. A shapeable surgical instrument according to claim 4, characterized in that: The second elastic component is a columnar spring or an O-shaped rubber ring.

7. A shapeable surgical instrument according to claim 1, characterized in that: The extension portion includes a hollow shaping tube that can be bent and shaped 360 degrees. The shaping tube includes a first spiral component and a second spiral component. The first spiral component and the second spiral component are intertwined and combined with each other. The first spiral component base cross-section is circular with a diameter of D, and the second spiral component base cross-section is square, with an axial spiral pitch of d, and d<D.

8. A shapeable surgical instrument according to any one of claims 1 to 7, characterized in that: The control part includes a handle seat, a handle shaft, a handle movable plate, a handle movable plate shaft, and a handle. The second inner pull rod is connected to the handle movable plate via the handle movable plate shaft. When the handle makes a reciprocating rotation motion along the handle shaft, the handle movable plate rotates along the handle movable plate shaft, thereby driving the second inner pull rod to make a linear reciprocating motion along the axial direction.

9. A shaping method for a shapeable surgical instrument, characterized in that: The method comprises the following steps: S1: Hold the instrument and shape the insertion part according to the surgical requirements; S2: Observe the angle of the working part corresponding to the actuator and the relative angle of the control part, and determine whether it meets the operator's operating habits; S3: If the conditions are met, the shaping is completed; if not, loosen the locking cap, rotate the working part actuator to the required angle, and then tighten the locking cap to complete the shaping; S4: During the surgical operation, if it is necessary to reshape the insertion portion and adjust the angle of the working portion, the surgical instrument is removed and reshaped and the angle is adjusted according to the above steps S1-S3.

Images