阅读说明：本技术 一种适用于腔镜手术的缝合器 (Stitching instrument suitable for endoscopic surgery ) 是由 陈天鸣 潘耀振 陈仕林 任琦蓉 于 2019-11-05 设计创作，主要内容包括：本发明创造公开了一种适用于腔镜手术的缝合器,包括主杆、夹持杆、单排钉仓、夹持驱动机构、推钉机构以及锁定机构；在主杆的前端侧边设有与切面；夹持杆摆动式铰接安装在切面处；在切面上沿主杆轴向设置有钉仓槽,单排钉仓放置于钉仓槽内；推钉机构用于将单排钉仓内的U形钛钉向夹持杆的夹持面推压；夹持驱动机构用于对夹持杆的摆动夹持进行驱动；锁定机构用于对推钉机构进行锁定和释放控制。该缝合器相比于现有的吻合器减少了切割部分以及另一侧的缝合结构,使得前端整体占用空间小,有效减小了器材前端的体积,满足腔镜手术内部空间小的使用需要。(The invention discloses a stitching instrument suitable for endoscopic surgery, which comprises a main rod, clamping rods, a single-row nail bin, a clamping driving mechanism, a nail pushing mechanism and a locking mechanism, wherein the main rod is fixedly connected with the clamping rods; a tangent plane is arranged at the side edge of the front end of the main rod; the clamping rod is hinged to the tangent plane in a swinging mode; a nail bin groove is axially arranged on the tangent plane along the main rod, and the single-row nail bins are placed in the nail bin groove; the nail pushing mechanism is used for pushing the U-shaped titanium nails in the single-row nail bin to the clamping surface of the clamping rod; the clamping driving mechanism is used for driving the swinging clamping of the clamping rod; the locking mechanism is used for locking and releasing the nail pushing mechanism. Compared with the existing anastomat, the suturing device reduces the cutting part and the suturing structure on the other side, so that the whole occupied space of the front end is small, the size of the front end of the instrument is effectively reduced, and the small use requirement of the internal space of the endoscopic surgery is met.)

1. The utility model provides a stitching instrument suitable for laparoscopic surgery which characterized in that: comprises a main rod (1), clamping rods (3), a single-row nail bin, a clamping driving mechanism, a nail pushing mechanism and a locking mechanism;

the side edge of the front end side of the main rod (1) is provided with a tangent plane (2), and the tangent plane (2) is parallel to the axial direction of the main rod (1); the clamping rod (3) is hinged at the tangent plane (2) in a swinging way, so that the clamping rod (3) is pressed on the tangent plane (2) after swinging; a nail bin groove (49) is axially arranged on the section (2) along the main rod (1), and the single-row nail bins are placed in the nail bin groove (49); the nail pushing mechanism is arranged in the main rod (1) and used for pushing the U-shaped titanium nails (26) in the single-row nail bin to the clamping surface of the clamping rod (3); strip-shaped grooves (48) are arranged on the clamping surface of the clamping rod (3) at intervals in a single row, and two end surfaces of each strip-shaped groove (48) are provided with arc-shaped slopes for extruding and bending two end parts of the U-shaped titanium nail (26); the clamping driving mechanism is arranged on the main rod (1) and used for driving the swinging clamping of the clamping rod (3); the locking mechanism is arranged at the tail end of the main rod (1) and used for locking and releasing the nail pushing mechanism.

2. The stapler suitable for endoscopic surgery according to claim 1, wherein: the single-row nail bin consists of a strip-shaped shell (5) and each nail pushing block (23); a rectangular push nail hole (21) is formed in the middle of the rear end face of the strip-shaped shell (5) along the length direction; nail strip-shaped holes (52) are formed in the upper side face of the strip-shaped shell (5) at intervals along the length direction, and each nail strip-shaped hole (52) is communicated with the nail-pushing rectangular hole (21); lifting limiting grooves (22) are arranged on the wall of the nail pushing rectangular hole (21) and below each nail strip-shaped hole (52); each nail pushing block (23) is respectively arranged in each lifting limiting groove (22), and the thickness of each nail pushing block (23) is larger than the hole width of each nail pushing rectangular hole (21); a strip-shaped nail groove (24) is arranged on the upper side surface of the nail pushing block (23); the bent sections of the U-shaped titanium nails (26) are inserted into the strip-shaped nail grooves (24), and two end parts of the U-shaped titanium nails (26) extend into the nail strip-shaped holes (52); a nail pushing slope surface (25) is arranged on the lower side surface of the nail pushing block (23).

3. The stapler suitable for endoscopic surgery according to claim 2, wherein: the nail pushing mechanism comprises a nail pushing support plate (28), a nail pushing rod (27), a guide lock rod (36), a guide sliding block (39) and a nail pushing pressure spring (38); a support slope surface (29) for extruding the nail pushing slope surface (25) is arranged at the front side edge of the nail pushing support plate (28); a guide sliding hole (40) is axially arranged in the main rod (1), and a guide sliding block (39) is slidably arranged in the guide sliding hole (40); the rear end of the nail pushing rod (27) penetrates into the guide sliding hole (40) through a nail bin groove (49) and is fixed on the front side surface of the guide sliding block (39); the nail pushing support plate (28) is fixedly arranged on the front end part of the nail pushing rod (27), and the front end of the nail pushing support plate (28) is aligned to the rear end hole opening of the nail pushing rectangular hole (21); a lock rod hole (37) is axially arranged in the rear end of the main rod (1); the guide lock rod (36) is inserted in the lock rod hole (37); the nail pushing compression spring (38) is sleeved on the guide lock rod (36), and the firing compression spring (38) is elastically supported between the rear side surface of the guide sliding block (39) and the rear end surface of the guide sliding hole (40); the locking mechanism is used for locking and releasing control of the guide lock lever (36).

4. The stapler suitable for endoscopic surgery according to claim 3, wherein: the locking mechanism comprises a locking pressure rod (8) and a locking pressure spring (9); a bar-shaped guide hole (11) communicated with the lock rod hole (37) is axially arranged on the rod wall at the rear end of the main rod (1); the rear end of the guide lock rod (36) is provided with a side convex strip (13) extending out of the strip-shaped guide hole (11); a toggle convex strip (12) is arranged at the front side of the side convex strip (13), and a locking tooth (11) is arranged at the rear side of the side convex strip (13); the middle part of the locking pressure lever (8) is arranged on the lever wall of the main lever (1) in a swinging way through a pressure lever support (7), and the pressure lever support (7) is positioned at the rear side edge of the strip-shaped guide hole (11); the front end of the locking pressure lever (8) is provided with a buckle tooth (10) which is buckled with the locking tooth (11); the locking compression spring (9) is elastically supported between the rear end of the locking compression rod (8) and the rod wall of the main rod (1) and used for pushing the buckling teeth (10) at the front end of the locking compression rod (8) to buckle the locking teeth (11).

5. The stapler suitable for endoscopic surgery according to claim 4, wherein: a protective sleeve head (4) is sleeved on the rear end of the locking pressure rod (8), and the protective sleeve head (4) is supported on the rod wall of the main rod (1); a handle rod (19) is arranged at the tail end of the main rod (1) in an extending way, and an anti-skid convex edge (6) is arranged on the outer wall of the handle rod (19).

6. The stapler suitable for endoscopic surgery according to claim 1, wherein: the length edges of two sides of the tangent plane (2) are respectively provided with a strip-shaped pressing groove, and the clamping surface of the clamping rod (3) is provided with an anti-skid rubber strip (20) at the position opposite to the strip-shaped pressing groove.

7. The stapler suitable for endoscopic surgery according to claim 1, wherein: the clamping driving mechanism comprises a driving rod (18), a sliding seat (15), a rebound pressure spring (16), an extrusion block (54), a driving screw rod (30) and a knob head (17); a strip-shaped notch (41) is arranged on the main rod (1) and positioned at the rear side edge of the tangent plane (2); a hinge convex strip (44) extends backwards from the rear end of the clamping rod (3), the lower side edge of the hinge convex strip (44) is a chamfered edge, and a push-pull strip-shaped hole (45) is arranged along the chamfered edge; the hinge convex strip (44) is embedded into the strip-shaped notch (41) and is installed on the strip-shaped notch (41) in a swing hinge mode through a hinge short shaft (23) arranged on the side edge; a rectangular mounting groove (14) is arranged on the wall of the tail end rod of the main rod (1), and a transmission hole (53) penetrates between the rectangular mounting groove (14) and the strip-shaped notch (41); the transmission rod (18) is inserted in the transmission hole (53), and the front end of the transmission rod (18) is provided with a U-shaped fork head (42); a push-pull driving shaft (43) is arranged between the fork rods on the two sides of the U-shaped fork head (42), and the push-pull driving shaft (43) penetrates through the push-pull strip-shaped hole (45); the sliding seat (15) is positioned in the rectangular mounting groove (14) and is fixedly arranged at the rear end of the transmission rod (18); the resilience pressure spring (16) is sleeved on the rear end of the transmission rod (18), and the resilience pressure spring (16) is elastically supported between the rectangular mounting groove (14) and the sliding seat (15); one end of the driving screw rod (30) is rotatably arranged at the bottom of the rectangular mounting groove (14), the other end of the driving screw rod (30) extends out of the rectangular mounting groove (14), and the knob head (17) is fixedly arranged on the extending end part of the driving screw rod (30); a driving threaded hole (35) is formed in the extrusion block (54), and the driving screw (30) is screwed in the driving threaded hole (35); a rear side pressing surface (32) is provided on the rear side surface of the sliding seat (15), and a front side pressing surface (31) is provided on the front side of the pressing block (54) and opposite to the rear side pressing surface (32).

8. The stapler suitable for endoscopic surgery according to claim 7, wherein: guide strip-shaped grooves (46) are formed in the side groove edges of the length of the two sides of the strip-shaped groove opening (41), and the guide strip-shaped grooves (46) are parallel to the axial direction of the transmission rod (18); two protruding shafts (47) are arranged on the side edge of the front end part of the transmission rod (18), and the end parts of the two protruding shafts (47) are respectively embedded into the guide strip-shaped grooves (46) on the two sides in a sliding manner.

9. The stapler suitable for endoscopic surgery according to claim 7, wherein: a strip-shaped support groove (34) which is parallel to the transmission rod (18) is arranged on the groove side of the rectangular mounting groove (14); a supporting slide block (33) which is embedded into the strip-shaped support (34) in a sliding way is arranged at the side edge of the sliding seat (15).

10. The stapler suitable for endoscopic surgery according to claim 1, wherein: rubber extrusion strips (50) for extruding the single-row nail bins are arranged on the side of the side grooves on the length of both sides of the nail bin groove (49); the front end surfaces of the main rod (1) and the clamping rod (3) are both provided with arc-shaped slopes (51).

Technical Field

The invention relates to a stitching instrument, in particular to a stitching instrument suitable for endoscopic surgery.

Background

At present, when lung surgery is carried out, a part of tissues such as a cut lung and the like needs to be discarded and can be cut by an electric hook or an ultrasonic knife, a part needing to be reserved needs to be firmly sewn, a titanium clip with a buckle or the ultrasonic knife and the like are unreliable, so that the sewing is needed to be firm, but the spaces of parts such as blood vessels and the like under an endoscope are small, but the existing lancing device is large in size, large in operation difficulty and high in risk. Therefore, it is necessary to design a suturing device suitable for endoscopic surgery, which can clamp and suture tissue only, so that the volume of the front end of the device is small, and the cutting device is used for cutting redundant tissue independently after suturing, thereby meeting the use requirement of the endoscopic surgery.

Disclosure of Invention

The invention has the following aims: the utility model provides a stitching instrument suitable for laparoscopic surgery can carry out the centre gripping to the tissue and sew up, and the equipment front end volume is less, can satisfy laparoscopic surgery's use needs.

The technical scheme is as follows: the suturing device suitable for the endoscopic surgery comprises a main rod, clamping rods, a single-row nail bin, a clamping driving mechanism, a nail pushing mechanism and a locking mechanism;

the side edge of the front end of the main rod is provided with a tangent plane, and the tangent plane is parallel to the axial direction of the main rod; the clamping rod is hinged at the tangent plane in a swinging manner, so that the clamping rod is pressed on the tangent plane after swinging; a nail bin groove is axially arranged on the tangent plane along the main rod, and the single-row nail bins are placed in the nail bin groove; the nail pushing mechanism is arranged in the main rod and used for pushing the U-shaped titanium nails in the single-row nail bin to the clamping surface of the clamping rod; the clamping surface of the clamping rod is provided with strip-shaped grooves at intervals in a single row, and two end surfaces of each strip-shaped groove are arc-shaped slopes used for extruding and bending two end parts of the U-shaped titanium nail; the clamping driving mechanism is arranged on the main rod and used for driving the swinging clamping of the clamping rod; the locking mechanism is arranged at the tail end of the main rod and used for locking and releasing the nail pushing mechanism.

Furthermore, the single-row nail bin consists of a strip-shaped shell and each nail pushing block; a rectangular hole for pushing the nail is formed in the middle of the rear end face of the strip-shaped shell along the length direction; nail strip-shaped holes are arranged on the upper side surface of the strip-shaped shell at intervals along the length direction, and each nail strip-shaped hole is communicated with the nail-pushing rectangular hole; lifting limiting grooves are arranged on the wall of the nail pushing rectangular hole and below each nail strip-shaped hole; each nail pushing block is respectively arranged in each lifting limiting groove, and the thickness of each nail pushing block is larger than the hole width of the nail pushing rectangular hole; a strip-shaped nail groove is arranged on the upper side surface of the nail pushing block; the bending section of the U-shaped titanium nail is inserted into the strip-shaped nail groove, and two end parts of the U-shaped titanium nail extend into the nail strip-shaped hole; the lower side surface of the nail pushing block is provided with a nail pushing slope surface.

Further, the nail pushing mechanism comprises a nail pushing support plate, a nail pushing rod, a guide lock rod, a guide slide block and a nail pushing pressure spring; a supporting slope surface for extruding the slope surface of the push nail is arranged on the front side edge of the push nail supporting plate; a guide sliding hole is axially arranged in the main rod, and a guide sliding block is slidably arranged in the guide sliding hole; the rear end of the nail pushing rod penetrates through the nail bin groove and extends into the guide sliding hole, and is fixed on the front side surface of the guide sliding block; the nail pushing support plate is fixedly arranged on the front end part of the nail pushing rod, and the front end of the nail pushing support plate is aligned to the rear end orifice of the nail pushing rectangular hole; a lock rod hole is axially arranged in the rear end of the main rod; the guide lock rod is inserted in the lock rod hole; the nail pushing compression spring is sleeved on the guide lock rod, and the firing compression spring is elastically supported between the rear side surface of the guide sliding block and the rear end surface of the guide sliding hole; the locking mechanism is used for locking and releasing the guide lock rod.

Further, the locking mechanism comprises a locking pressure rod and a locking pressure spring; a bar-shaped guide hole communicated with the lock rod hole is axially arranged on the rod wall at the rear end of the main rod; the rear end of the guide lock rod is provided with a side raised line extending out of the strip-shaped guide hole; the front side of the side raised line is provided with a poking raised line, and the rear side of the side raised line is provided with a locking tooth; the middle part of the locking pressure rod is arranged on the rod wall of the main rod in a swinging mode through a pressure rod support, and the pressure rod support is positioned at the rear side edge of the strip-shaped guide hole; the front end of the locking pressure lever is provided with a buckle tooth which is buckled with the locking tooth; the locking compression spring is elastically supported between the rear end of the locking compression rod and the rod wall of the main rod and used for pushing the buckle teeth at the front end of the locking compression rod to be buckled on the locking teeth.

Furthermore, a protective sleeve head is sleeved at the rear end of the locking pressure rod and supported on the rod wall of the main rod; the tail end of the main rod is provided with a handle rod in an extending way, and the outer wall of the handle rod is provided with an anti-slip convex edge.

Furthermore, the length edges of the two sides of the tangent plane are respectively provided with a strip-shaped pressing groove, and the clamping surface of the clamping rod is provided with an anti-skid rubber strip at the position opposite to the strip-shaped pressing groove.

Furthermore, the clamping driving mechanism comprises a transmission rod, a sliding seat, a rebound pressure spring, an extrusion block, a driving screw and a knob head; a strip-shaped notch is formed in the rear side edge of the tangent plane on the main rod; the rear end of the clamping rod extends backwards to be provided with a hinged convex strip, the lower side edge of the hinged convex strip is a chamfered edge, and a push-pull strip-shaped hole is formed along the chamfered edge; the hinged convex strips are embedded into the strip-shaped notches and are hinged and installed on the strip-shaped notches in a swinging mode through hinged short shafts arranged on the side edges; a rectangular mounting groove is formed in the wall of the tail end rod of the main rod, and a transmission hole penetrates between the rectangular mounting groove and the strip-shaped notch; the transmission rod is inserted in the transmission hole, and the front end of the transmission rod is provided with a U-shaped fork head; a push-pull driving shaft is arranged between the fork rods on the two sides of the U-shaped fork head and penetrates through the push-pull strip-shaped hole; the sliding seat is positioned in the rectangular mounting groove and is fixedly arranged at the rear end of the transmission rod; the resilience pressure spring is sleeved on the rear end of the transmission rod and elastically supported between the rectangular mounting groove and the sliding seat; one end of the driving screw is rotatably arranged at the bottom of the rectangular mounting groove, the other end of the driving screw extends out of the rectangular mounting groove, and the knob head is fixedly arranged on the extending end part of the driving screw; a driving threaded hole is formed in the extrusion block, and the driving screw is screwed on the driving threaded hole; the rear side surface of the sliding seat is provided with a rear side extrusion surface, and the front side extrusion surface is arranged on the front side of the extrusion block and opposite to the rear side extrusion surface.

Furthermore, guide strip-shaped grooves are formed in the side groove edges of the length sides of the two sides of the strip-shaped groove opening and are parallel to the axial direction of the transmission rod; two convex shafts are arranged on the side edges of the front end part of the transmission rod, and the end parts of the two convex shafts are respectively embedded into the guide strip-shaped grooves on the two sides in a sliding mode.

Further, a strip-shaped supporting groove parallel to the transmission rod is arranged on the groove side of the rectangular mounting groove; the side of the sliding seat is provided with a supporting slide block which is embedded into the strip-shaped support in a sliding way.

Furthermore, rubber extrusion strips for extruding the single-row nail bins are arranged on the side edges of the side grooves on the length sides of the two sides of the nail bin groove; the front end faces of the main rod and the clamping rods are both arc-shaped slope surfaces.

Compared with the prior art, the invention has the beneficial effects that: utilize single row nail storehouse to install in nail storehouse groove, realize single row sewing under pushing and pressing the effect of nail pushing mechanism, compare in current anastomat and reduced the suture structure of cutting knife part and opposite side for the whole occupation space of front end has reduced half at least, has effectively reduced the volume of equipment front end, uses more nimble convenient safety, satisfies the little use needs of laparoscopic surgery inner space.

Drawings

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

FIG. 2 is a schematic cross-sectional structure of the present invention;

FIG. 3 is a schematic cross-sectional view of a single-row staple cartridge created by the present invention;

FIG. 4 is a schematic view of the rear end structure of the clamping rod of the present invention;

FIG. 5 is a schematic view of a partial sectional structure of the rectangular mounting groove of the present invention.

Detailed Description

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.