阅读说明：本技术 一种手术器械上的旋转固定装置及内镜切割手术器械 (Rotary fixing device on surgical instrument and endoscopic cutting surgical instrument ) 是由 朱小伟 封骁 于 2019-09-24 设计创作，主要内容包括：本发明提供一种手术器械上的旋转固定装置,其特征在于,包括旋转壳体与固定壳体,所述旋转壳体用于与手术器械的执行件旋转方向相对固定连接,所述固定壳体用于与外接设备相对固定连接,所述旋转壳体套设于所述固定壳体上,且与所述固定壳体同轴设置,所述旋转壳体的内腔直径大于固定壳体外径,所述旋转壳体的内壁和所述固定壳体的外壁的其中一个设有多个卡槽,另一个设有至少一个弹性凸起,所述弹性凸起与所述卡槽相匹配,解决了现有技术中手术器械在进入人体腔内后不方便调节角度以及调节后不方便固定的技术问题。(The invention provides a rotary fixing device on a surgical instrument, which is characterized by comprising a rotary shell and a fixed shell, wherein the rotary shell is used for being relatively and fixedly connected with an executing piece of the surgical instrument in the rotating direction, the fixed shell is used for being relatively and fixedly connected with external equipment, the rotary shell is sleeved on the fixed shell and is coaxially arranged with the fixed shell, the diameter of an inner cavity of the rotary shell is larger than the outer diameter of the fixed shell, one of the inner wall of the rotary shell and the outer wall of the fixed shell is provided with a plurality of clamping grooves, the other one of the inner wall of the rotary shell and the outer wall of the fixed shell is provided with at least one elastic bulge, and the elastic bulge is matched with the clamping grooves, so that the technical problems that the surgical instrument is inconvenient to adjust the angle and is inconvenient to fix after.)

1. The utility model provides a rotatory fixing device on surgical instruments, its characterized in that, includes rotatory casing and fixed casing, rotatory casing be used for with surgical instruments's executive piece direction of rotation relatively fixed connection, fixed casing be used for with external device relatively fixed connection, rotatory casing cover is located on the fixed casing, and with the coaxial setting of fixed casing, the inner chamber diameter of rotatory casing is greater than fixed casing external diameter, the inner wall of rotatory casing with one of them of the outer wall of fixed casing is equipped with a plurality of draw-in grooves, and another is equipped with at least one elastic bulge, elastic bulge with the draw-in groove phase-match.

2. The rotating fixture on a surgical instrument as claimed in claim 1, wherein a plurality of said slots are evenly distributed, and the number of said slots is at least 6.

3. the rotating fixing device of a surgical instrument as claimed in claim 2, wherein the number of the elastic protrusions is multiple, and the radian between two adjacent elastic protrusions is an integral multiple of the radian between two adjacent clamping grooves.

4. The rotating fixture on a surgical instrument according to any one of claims 1 to 3, wherein when the rotating housing rotates relative to the stationary housing, the minimum width of the elastic protrusion when deformed is equal to or less than the difference between the inner diameter of the rotating housing and the outer diameter of the stationary housing.

5. An endoscopic cutting surgical device comprising a cutting wire, an actuation assembly, a handle assembly, a fixation connection assembly and a rotational fixation device on a surgical device according to any one of claims 1-4; the rotary shell with handle component fixed connection, fixed shell with fixed connection subassembly links to each other, the cutting wire as surgical instruments's executive component with actuating assembly fixed connection, actuating assembly with handle component can follow axial relative slip and relatively fixed in the direction of rotation.

6. An endoscopic surgical cutting instrument according to claim 5, wherein said actuating assembly comprises a sliding sleeve and a fixed member, said handle assembly comprises a sliding tube and a sliding groove provided on said sliding tube; the cutting wire is fixed in the inner cavity of the sliding sleeve through the fixing piece penetrating through the connecting hole, and the cutting wire slides relative to the sliding pipe along the sliding groove under the driving of the sliding sleeve.

7. an endo-surgical instrument as set forth in claim 6, wherein said securing member secures said cutting wire within said inner lumen of said sliding sleeve and also serves to prevent rotation of said sliding sleeve relative to said slide tube.

8. an endoscopic cutting surgical instrument according to claim 6 or 7, wherein said fixing member comprises a connecting block and a screw rod, one end of said connecting block is provided with a threaded hole matched with said screw rod, one side of said connecting block is provided with a cutting wire connecting hole matched with a cutting wire, and said cutting wire connecting hole is communicated with said threaded hole.

9. an endo-surgical instrument as claimed in claim 5, wherein said attachment and connection assembly is adapted to connect to a surgical scope and/or a device for supplying energy to the effector.

Technical Field

the invention relates to a medical instrument, in particular to a rotary fixing device on a surgical instrument and an inner diameter cutting instrument.

Background

The Endoscopic discectomy (EST) is a treatment technique for incising the duodenal papillary sphincter and the common bile duct terminal part by using a high-frequency electric incision knife under an endoscope, which is further developed on the basis of the diagnostic technique of Endoscopic Retrograde Cholangiopancreatography (ERCP), and is currently the most important and highest-risk step in most therapeutic ERCP surgeries.

The incision knife is a necessary instrument in EST surgery, and is mainly divided into a pull-type arc incision knife and a needle incision knife, wherein the pull-type arc incision knife is the most widely applied at present. The structure of the existing incision knife in the market mainly comprises a handle component, an outer sheath tube, an electrode, a cutting wire, an angiography cavity interface, a guide wire cavity interface and the like. The far end of the cutting wire is connected with the far end of the outer sheath tube, the near end of the cutting wire is fixed on the handle, and the far end of the cutting wire is pulled through the sliding of the handle, so that the far end of the outer sheath tube is pulled into a bow shape. The radiography cavity interface and the guide wire cavity interface are connected with the cavity channel corresponding to the outer sheath tube.

In clinic, the outer diameter of the distal end of the sheath tube is thick, and the flexibility is not enough, so that the success of inserting the nipple is not high, and the operation efficiency is influenced; and the nipple is easy to be injured by insertion, which causes the occurrence of complications such as pancreatitis and the like; the position, shape, pathological changes and the like of the nipple of the patient often cause that the cutting wire is difficult to be aligned with the optimal incision direction of the nipple sphincter, namely the position between 10 and 12 o' clock. If the distal end of the incision knife device is set to be an adjustable structure in order to conveniently align the angle, the injury to human tissues caused by misoperation or redundant adjustment in the operation process is easy to occur.

Based on the above problems, it is urgently needed to provide a cutting knife device which can not only make the distal end conveniently rotate and adjust, but also can effectively fix the distal end after adjustment.

Disclosure of Invention

the invention aims to provide a rotary fixing device on a surgical instrument and an incision surgical instrument with the rotary fixing device, and solves the technical problems that the proximal end of an endoscopic incision operation is inconvenient to adjust after being inserted into a human body and the proximal end of the endoscopic incision operation is inconvenient to relatively fix after being adjusted in the prior art by arranging a structure capable of relatively rotating and arranging a locking mechanism between opposite rotating components.

The technical scheme of the invention is realized as follows:

The utility model provides a rotatory fixing device on surgical instruments, includes rotatory casing and fixed casing, rotatory casing be used for with surgical instruments's executive part rotation direction relatively fixed connection, fixed casing be used for with the relatively fixed connection of external device, rotatory casing cover is located on the fixed casing, and with the coaxial setting of fixed casing, the inner chamber diameter of rotatory casing is greater than fixed casing external diameter, the inner wall of rotatory casing with one of them of the outer wall of fixed casing is equipped with a plurality of draw-in grooves, and another is equipped with at least one elastic bulge, elastic bulge with the draw-in groove phase-match.

Furthermore, a plurality of the clamping grooves are uniformly distributed, and the number of the clamping grooves is at least 6, preferably 6-12. At least 6 can guarantee in the adjustment process, can rotate 60 draw-in grooves and elastic bulge looks joint at least, and the incision sword must can rotate to position between 10 ~ 12 o' clock.

Furthermore, the elastic protrusions are multiple, and the radian between every two adjacent elastic protrusions is an integral multiple of the radian between every two adjacent clamping grooves.

Further, rotatory casing for when fixed casing is rotatory, minimum width less than or equal to when the elastic bulge warp rotatory casing's internal diameter and fixed casing external diameter are poor, have guaranteed that the rotation process can go on smoothly, and the elastic bulge can be compressed to the gap in rotatory in-process, waits when the elastic bulge is rotatory to the draw-in groove position, and the nature is kick-backed fixedly with the draw-in groove joint, when needs continue to rotate, then further need provide bigger power and rotate.

in addition, the technical scheme of the invention also comprises an endoscopic cutting surgical instrument which comprises a cutting wire, an actuating component, a handle component, a fixed connecting component and the rotary fixing device on the surgical instrument; the rotary shell with handle component fixed connection, fixed shell with fixed connection subassembly links to each other, the cutting wire as surgical instruments's executive component with actuating assembly fixed connection, actuating assembly with handle component can follow axial relative slip and relatively fixed in the direction of rotation.

further, the actuating assembly comprises a sliding sleeve and a fixing piece, and the handle assembly comprises a sliding pipe and a sliding groove formed in the sliding pipe; the cutting wire is fixed in the inner cavity of the sliding sleeve through the fixing piece penetrating through the connecting hole, and the cutting wire slides relative to the sliding pipe along the sliding groove under the driving of the sliding sleeve.

Further, the fixing piece is used for preventing the sliding sleeve from rotating relative to the sliding pipe when the cutting wire is fixed in the inner cavity of the sliding sleeve.

Further, the fixing piece comprises a connecting block and a screw rod, one end of the connecting block is provided with a threaded hole matched with the screw rod, one side of the connecting block is provided with a cutting wire connecting hole matched with the cutting wire, and the cutting wire connecting hole is communicated with the threaded hole.

Further, the fixed connection assembly is used for connecting a surgical observation device and/or equipment for supplying energy to the executing piece.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1) Through the matching of the clamping groove and the elastic bulge, the technical problems that the angle of the surgical instrument is inconvenient to adjust after entering the cavity of a human body and the surgical instrument is inconvenient to fix after being adjusted in the prior art are solved;

2) the rotary shell is directly connected with the handle assembly, so that an additional rotary part is omitted, and the actuating part can be directly driven to rotate;

3) The fixed shell can be kept still in the rotating process and can be used for externally connecting some fixed equipment without being influenced by the adjusting process;

4) Through reasonable draw-in groove quantity setting for rotatory back fixed position can be fixed between 10 ~ 12 o' clock certainly, makes things convenient for the operation in-process location at the best direction of cutting of nipple sphincter.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a fixing and connecting assembly according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a handle assembly according to an embodiment of the present invention;

FIG. 4 is a perspective view of the handle assembly and actuating assembly of an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the stationary housing and the rotating housing of the present invention taken in the direction B-B of FIG. 1;

FIG. 6 is a schematic structural diagram of an actuator assembly according to an embodiment of the present invention;

Figure 7 is a cross-sectional view of the fastener of the invention taken along the line a-a of figure 1.

Corresponding reference numerals are as follows:

1. cutting the wire; 2. an actuation assembly; 3. a handle assembly; 4, fixing the connecting assembly; 21. a sliding sleeve; 22. a fixing member; 23. connecting holes; 24. a drive ring; 30. a rotating housing; 31. a card slot; 32. a slide pipe; 33. a sliding groove; 34. a handle ring; 40. a stationary housing; 41. an elastic bulge; 42. an imaging port; 43. an electrode plug; 221. connecting blocks; 222. a screw; 223. a threaded hole; 224. the cutting wire is connected to the hole.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.