Combined stent sheath

Abstract

The utility model discloses a combined support sheath, and relates to the field of surgical operating instruments, the combined support sheath comprises a fixed sheath, a working sheath, a supporting flap and an endoscope, the bottom of the fixed sheath is open, and the fixed sheath is arranged to be in an inverted hollow conical barrel shape; the number of the working sheaths is at least one, the working sheaths are arranged to be in an inverted hollow conical barrel shape, the multiple working sheaths are arranged in the fixing sheath in a sleeved mode after being sleeved step by step from outside to inside, the bottom of the working sheath located on the innermost layer is closed, and the bottoms of the other working sheaths are open so that sleeving can be convenient. According to the scheme, the fixed sheath and the working sheath which are sleeved step by step are combined to form a sheath-in-sheath structure, the working length can be increased through the sheath-in-sheath function under the condition that the original sheath is not pulled out, the endoscope reaches a deep focus, and secondary injury caused by secondary placement of the working sheath is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to surgical instruments technical field, concretely is a kind of combined support sheath. BACKGROUND

[0002] When surgical treatment disease, need accurate puncture pathological change site or establish operation channel, such as brain tumor or cerebral hemorrhage operation, spinal or abdominal operation etc., need accurately establish channel, these operations need accurate puncture to reach operation site to ensure operation success, existing implantation operation channel operation is all non-visual, sometimes can cause unsuccessful or serious side injury. To avoid the operation failure caused by puncture direction error,

[0003] Therefore need to provide a kind of combined support sheath, visual puncture sheath under the navigation or ultrasonic guidance to assist operator to observe puncture direction, position, surrounding situation in real time, accurately reach lesion, working sheath has different length and can be needed, through sheath in sheath application reaches deep lesion, avoids the side injury caused by secondary implantation working sheath, while designed retractor, play the role of retraction skin and fixed working sheath, and working sheath forms integrated application, improves the precision, efficiency and safety of operation. SUMMARY

[0004] The utility model is directed to the deficiency of prior art, provide a kind of combined support sheath.

[0005] A kind of combined support sheath, including fixed sheath, working sheath, support flap, endoscope and universal fixture, the universal fixture is installed on support flap, wherein:

[0006] The bottom of the fixed sheath is open, the fixed sheath is set into inverted hollow conical cylinder, and the top end side extends outward to form a fixed sheath arm, the working sheath arm is clamped on the support flap by the universal fixture;

[0007] The number of the working sheath is at least one, the working sheath is set into inverted hollow conical cylinder, and the top end side extends outward to form a working sheath arm, the working sheath is gradually sleeved from outside to inside, and then sleeved into the inside of the fixed sheath, the angle is adjusted by the working sheath arm, the bottom of the working sheath in the innermost layer is closed, and the bottom of the remaining working sheath is open for easy sleeving;

[0008] The endoscope is inserted into the inner cavity of the working sheath in the innermost layer.

[0009] Further, the support petals are quarter-circular arc structures, the outer circumferential wall is outwardly convex to form a semicircular clamping petal, a plurality of clamping petals are distributed equidistantly along the outer circumferential wall of the support petal to form a wave-shaped structure, and the inner circumferential wall is provided as a locking petal. Four support petals are enclosed to form a ring-shaped support structure, and the connecting portions are hingedly connected by locking wires. The surgical field window is located in the middle of the ring-shaped structure.

[0010] Further, the universal clamp comprises a ball-and-socket connecting rod, a fixed clamp and a locking nut. The ball-and-socket connecting rod comprises a connecting rod and ball-and-socket joints fixed at both ends. The fixed clamp comprises an arc-shaped clamp block and a connecting stud fixedly connected. A ball-and-socket connecting groove is formed on the side of the connecting stud opposite to the arc-shaped clamp block. A tightening screw is mounted on one side of the arc-shaped clamp block. The ball-and-socket joint is inserted into the ball-and-socket connecting groove. The locking nut is threadedly connected with the connecting stud.

[0011] Further, the arc-shaped clamp block on one side of the universal clamp is fixed with the clamping petal by the tightening screw, and the arc-shaped clamp block on the other side of the universal clamp is fixed with the fixed sheath arm by the tightening screw.

[0012] Further, a skin retractor is further provided for retracting the skin of the surgical incision to form the surgical field window. The skin retractor is fixed to the clamping petal on the support petal.

[0013] Further, a mechanical retractor is further provided for retracting the skin of the surgical incision to form the surgical field window. The mechanical retractor is installed on the clamping petal of the support petal by the universal clamp.

[0014] Further, the fixed sheath is a primary puncture sleeve, which is a hollow conical sleeve.

[0015] The number of working sheaths is one, which is a secondary puncture sleeve. The secondary puncture sleeve is a conical sleeve with a closed bottom. The secondary puncture sleeve is sleeved into the inner cavity of the primary puncture sleeve.

[0016] Further, the fixed sheath is a primary puncture sleeve, which is a hollow conical sleeve.

[0017] The number of working sheaths is two, which are a secondary puncture sleeve and a tertiary puncture sleeve. The secondary puncture sleeve is a conical sleeve with an open bottom. The tertiary puncture sleeve is a conical sleeve with a closed bottom. After the secondary puncture sleeve and the tertiary puncture sleeve are sleeved in sequence from the outside to the inside, the whole is sleeved into the inner cavity of the primary puncture sleeve.

[0018] Further, the fixed sheath is a primary puncture sleeve, which is a hollow conical sleeve.

[0019] The working sheath quantity is set to three, which are a secondary puncture cover, a tertiary puncture cover and a quaternary puncture cover, the secondary puncture cover and the tertiary puncture cover are bottom-opened conical sleeve-shaped, the quaternary puncture cover is bottom-closed conical sleeve-shaped, and the secondary puncture cover, the tertiary puncture cover and the quaternary puncture cover are successively sleeved from outside to inside and then are sleeved into a first puncture cover inner cavity.

[0020] Compared with the prior art, the utility model has the advantages of:

[0021] 1. The fixed sheath and the working sheath are successively sleeved, the multi-sheath combination forms a "sheath-in-sheath" structure, the working length can be lengthened through the sheath-in-sheath function without removing the original sheath, deep lesions can be reached, and secondary damage caused by the second time of placing the working sheath is avoided.

[0022] 2. The support flap, the retractor, the fixed sheath and the working sheath are matched with each other, are fixed in the central surgical field, surgical operation can be performed, the working sheath can be universally adjusted in different directions and angles, the complex operations such as needing multiple instruments to cooperate to retract the skin and the dura mater, fixing the working sheath or an assistant fixing the working sheath in clinical work are solved, the surgical operation space is saved, the surgical instrument is simple, the surgical operation is convenient, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure schematic view of the combined support sheath using a skin retractor is provided for the scheme;

[0024] Figure 2 The structure schematic view of the secondary puncture cover and the tertiary puncture cover is provided for the scheme;

[0025] Figure 3 The structure schematic view of the universal fixture is provided for the scheme;

[0026] Figure 4 The structure schematic view of the first puncture cover, the secondary puncture cover, the tertiary puncture cover and the quaternary puncture cover successively sleeved is provided for the scheme;

[0027] Figure 5 The structure schematic view of the first puncture cover sleeved into the secondary puncture cover is provided for the scheme;

[0028] Figure 6 The structure schematic view of the first puncture cover, the secondary puncture cover and the tertiary puncture cover successively sleeved is provided for the scheme;

[0029] Figure 7 The structure schematic view of the mechanical retractor installed on the support flap is provided for the scheme;

[0030] Figure 8 The overall structure schematic view of the combined support sheath is provided for the scheme.

[0031] Attached reference numerals: 1. Support flap; 2. Locking wire; 3. Primary puncture sheath; 4. Secondary puncture sheath; 5. Tertiary puncture sheath; 6. Quaternary puncture sheath; 7. Skin retractor; 8. Endoscope; 9. Universal clamp; 10. Surgical field window; 11. Mechanical retractor;

[0032] 101. Clamping valve; 102. Locking valve;

[0033] 91. Ball-and-socket connecting rod; 92. Fixing clamp; 93. Locking nut;

[0034] 911. Connecting rod; 912. Ball joint;

[0035] 921. Arc-shaped clamp; 922. Connecting stud; 923. Ball socket connecting groove; 924. Tightening screw. Detailed Implementation

[0036] Example 1

[0037] This embodiment provides a combined support sheath, as shown in the attached instruction manual. Figures 1-8 As shown, it includes a fixed sheath, a working sheath, a support flap 1, and an endoscope 8. After the working sheath is installed in stages, it is further installed into the lumen of the fixed sheath to form a "sheath within a sheath" structure. The endoscope 8 is then installed in the lumen of the innermost working sheath. The multi-sheath combination can extend the working length through the sheath within a sheath function without removing the original sheath. It can also assist the operator in observing the puncture direction, position, and surrounding conditions in real time through the design of a navigation or ultrasound-guided visualization puncture sheath, so as to accurately reach the lesion.

[0038] For a specific embodiment, please refer to the appendix of the specification. Figure 1 The support flap 1 is a quarter-circle arc structure. The outer circumference of the circumference protrudes outward to form a semi-circular clamping flap 101. Several clamping flaps 101 are distributed at equal intervals along the outer circumference of the support flap 1 to form a wave-shaped structure. The inner circumference is set as a locking flap 102. The four support flaps 1 form a ring-shaped support structure and are hinged at the connection with locking wire 2. The skin of the surgical site is pulled open by skin hook 7 at the cavity position of the ring body to form a surgical field window 10 that facilitates the operation.

[0039] The retractor can be a skin retractor 7, a mechanical retractor 11, or any other structure that can retract the skin of the surgical opening, as long as it can retract the skin of the surgical opening and form a surgical field window 10 that is convenient for the surgeon. There are no too many limitations here. This embodiment uses skin retractor 7 as an example for explanation. Skin retractor 7 is attached to the clamping flap on the support flap 1.

[0040] Please refer to the appendix of the instruction manual. Figure 1 , 4The fixed sheath is a first puncture sleeve 3, which is a hollow cone sleeve with a fixed sheath arm extending from one side of the upper end, and is fixed by being clamped on the locking petals of the support petals 1 through the universal clamp 9.

[0041] The structure of the universal clamp 9 will be described below with reference to the accompanying drawings Figure 3 Specifically, the ball joint connecting rod 91 includes a connecting rod 911 and ball joints 912 fixed at both ends, the fixed clamps 92 include arc-shaped clamping blocks 921 and connecting studs 922 fixedly connected, the connecting studs 922 are provided with ball joint connecting grooves 923 on the sides opposite to the arc-shaped clamping blocks 921, and the ball joints 912 are inserted into the ball joint connecting grooves 923.

[0042] The two ball joints 912 are respectively inserted into the two ball joint connecting grooves 923, the connecting rod 911 and the connecting stud 922 are fixed as a whole through the locking nuts 93, one of the two arc-shaped clamping blocks 921 is clamped into the locking petals 101 and fixed through the tightening screws 924, and the other arc-shaped clamping block 921 is clamped on the fixed sheath arm and fixed through the tightening screws 924.

[0043] In this embodiment, the number of working sheaths is three, which are the second puncture sleeve 4, the third puncture sleeve 5 and the fourth puncture sleeve 6. The working sheath arms are extended from one side of the upper end of each puncture sleeve, which are used to adjust different directions and angles for the convenience of operation. In addition, the second puncture sleeve 4 and the third puncture sleeve 5 are cone sleeve tubes with open bottoms, and the fourth puncture sleeve 6 is a cone sleeve tube with a closed bottom. After the second puncture sleeve 4, the third puncture sleeve 5 and the fourth puncture sleeve 6 are successively sleeved from the outside to the inside, the whole is sleeved into the inner cavity of the first puncture sleeve 3, and then the endoscope 8 is sleeved inside the fourth puncture sleeve 6, so as to realize visualization.

[0044] The annular structure formed by the support petals 1 can be attached to the skin, and then the skin hook 7 is used to pull open the skin and the dura mater. The visual first puncture sleeve 3 is clamped on the locking petals 102 on the inner side of the support petals 1 through the universal clamp 9, so as to be fixed in the center of the surgical field, and the operation can be performed. The working sheath arms at the top of the second puncture sleeve 4, the third puncture sleeve 5 and the fourth puncture sleeve 6 can be adjusted in different directions and angles, which solves the complex operation in clinical work, such as the need for multiple instruments to pull open the skin and the dura mater, the fixation of the working sheath or the fixation of the working sheath by an assistant.

[0045] Embodiment 2

[0046] The structure of the universal clamp 9 will be described below with reference to the accompanying drawings Figure 6The embodiment is different from embodiment 1 in that the number of working sheaths is set to two, i.e., the secondary puncture sleeve 4 and the tertiary puncture sleeve 5, the secondary puncture sleeve 4 is a bottom-opened conical sleeve, the tertiary puncture sleeve 5 is a bottom-closed conical sleeve, the secondary puncture sleeve 4 and the tertiary puncture sleeve 5 are successively sleeved from outside to inside, and then the whole is sleeved into the inner cavity of the primary puncture sleeve 3, and then the endoscope 8 is sleeved inside the tertiary puncture sleeve 5, so as to realize visualization.

[0047] Embodiment 3

[0048] Please refer to the drawings in the specification Figure 5 The embodiment is different from embodiment 1 in that the number of working sheaths is set to one, i.e., the secondary puncture sleeve 4, the secondary puncture sleeve 4 is a bottom-closed conical sleeve, the secondary puncture sleeve 4 is sleeved into the inner cavity of the primary puncture sleeve 3, and then the endoscope 8 is sleeved inside the secondary puncture sleeve 4, so as to realize visualization.

[0049] In embodiments 1-3, in addition to the skin hook 7, the mechanical hook 11 can also be selected, the mechanical hook 11 is installed through the universal clamp 9 connected to the support petals, wherein the mechanical hook can adopt the hook assembly in the prior application CN215384256U of the applicant, and no more details are described here.

[0050] In the description of the utility model, it is understood that the orientation or positional relationship 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" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The device or element indicated or implied must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the features limited by "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0051] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A combination support sheath characterized by, It comprises a fixed sheath, a working sheath, a support petal (1), an endoscope (8) and a universal clamp (9) installed on the support petal (1), wherein: The bottom of the fixed sheath is open, the fixed sheath is set as an inverted hollow conical cylinder, the top end extends outward on one side to form a fixed sheath arm, the working sheath arm is clamped on the support petal (1) through the universal clamp (9); The number of the working sheaths is at least one, the working sheaths are set as inverted hollow conical cylinders, the top end extends outward on one side to form a working sheath arm, a plurality of working sheaths are successively sleeved from the outside to the inside and then sleeved into the fixed sheath, the angle of the working sheath arm is adjusted, the bottom of the working sheath in the innermost layer adopts a closed type, and the bottoms of the remaining working sheaths adopt an open type for easy sleeving; The endoscope (8) is inserted into the inner cavity of the working sheath in the innermost layer.

2. The combination of a sheath and a stent according to claim 1, wherein: The support petal (1) is a quarter circular arc structure, the outer side wall protrudes outward to form a semicircular clamping petal (101), a plurality of clamping petals (101) are equidistantly distributed along the outer side wall of the support petal (1) to form a wave-shaped structure, the inner side wall is provided as a locking petal (102), four support petals (1) are enclosed to form a ring-shaped support structure and are hinged at the connecting positions by a locking wire (2), and an operation field window (10) is located in the middle of the ring-shaped structure.

3. The combination of a sheath and a stent according to claim 2, wherein: The universal clamp (9) comprises a ball-and-socket connecting rod (91), a fixed clamp (92) and a locking nut (93), the ball-and-socket connecting rod comprises a connecting rod (911) and ball-and-socket joints (912) fixed at both ends, the fixed clamp (92) comprises an arc-shaped clamp block (921) and a connecting stud (922) fixedly connected, a ball-and-socket connecting groove (923) is formed on the side of the connecting stud (922) away from the arc-shaped clamp block (921), a tightening screw (924) is mounted on one side of the arc-shaped clamp block (921), the ball-and-socket joint (912) is inserted into the ball-and-socket connecting groove (923), and the locking nut (93) is threadedly connected with the connecting stud (922).

4. The combination of a sheath and a stent according to claim 3, wherein: The arc-shaped clamp block (921) on one side of the universal clamp (9) is fixed with the clamping petal (101) through the tightening screw (924), and the arc-shaped clamp block (921) on the other side of the universal clamp (9) is fixed with the fixed sheath arm through the tightening screw (924).

5. The combination of a sheath and a stent according to claim 2, wherein: It also comprises a skin hook (7) for retracting the skin of the surgical opening, an operation field window (10) is formed after the surgical opening is retracted, and the skin hook (7) is fixed to the clamping petal (101) on the support petal (1).

6. The combination of a sheath and a stent according to claim 2, wherein: It also comprises a mechanical retractor (11) for retracting the skin of the surgical opening, an operation field window (10) is formed after the surgical opening is retracted, and the mechanical retractor (11) is installed on the clamping petal of the support petal through the universal clamp (9).

7. The combined support sheath according to claim 1, wherein: The fixed sheath is a primary puncture sleeve (3), and the primary puncture sleeve (3) is a hollow conical sleeve; The number of the working sheaths is set to one, which is a secondary puncture sleeve (4), the secondary puncture sleeve (4) is a conical sleeve with a closed bottom, and the secondary puncture sleeve (4) is sleeved into the inner cavity of the primary puncture sleeve (3).

8. The combined sheath and support according to claim 1, characterized in that: the fixed sheath is a first puncture sleeve (3) in the shape of a hollow cone sleeve; the working sheath is provided in two, a second puncture sleeve (4) and a third puncture sleeve (5), the second puncture sleeve (4) is in the shape of a cone sleeve with an open bottom, the third puncture sleeve (5) is in the shape of a cone sleeve with a closed bottom, and the second puncture sleeve (4) and the third puncture sleeve (5) are successively sleeved from the outside to the inside and then are entirely sleeved into the inner cavity of the first puncture sleeve (3).

9. The combined sheath and support according to claim 1, characterized in that: the fixed sheath is a first puncture sleeve (3) in the shape of a hollow cone sleeve; the working sheath is provided in three, a second puncture sleeve (4), a third puncture sleeve (5) and a fourth puncture sleeve (6), the second puncture sleeve (4) and the third puncture sleeve (5) are both in the shape of a cone sleeve with an open bottom, the fourth puncture sleeve (6) is in the shape of a cone sleeve with a closed bottom, and the second puncture sleeve (4), the third puncture sleeve (5) and the fourth puncture sleeve (6) are successively sleeved from the outside to the inside and then are entirely sleeved into the inner cavity of the first puncture sleeve (3).

Images