CN115153719A - Hemostatic forceps - Google Patents

Abstract

The invention provides a pair of hemostatic forceps, which comprises an adapter and a belt cabin component; in the belt bin assembly, a belt feeding groove is formed in a clamp arm, the near end of the belt feeding groove is communicated with the space in the bin of the belt bin to form a belt feeding channel, and the far end of the belt feeding groove is positioned on the inner side of a hook part of the clamp arm and is bent along the shape of the hook part; the belt conveying structure is matched with the tourniquet under the driving of the first actuating piece; the triggering structure is driven by the first actuating piece to be matched with the hook part; the adapter comprises a shell and an indicating structure, wherein a driving shaft used for driving a first actuating piece is arranged in the shell, the indicating structure comprises a movement indicating needle and an observing position, the movement indicating needle is accommodated in the shell and is in linkage with the driving shaft, the observing position is formed on the shell and corresponds to the movement indicating needle, and at least two blood vessel types with different diameters are marked on the observing position from near to far. The working process of the firing structure can be displayed on the shell of the adapter to guide a user to clamp blood vessels with different thicknesses.

Description

Hemostatic forceps

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pair of hemostatic forceps.

Background

To fully expose the surgical field during surgery, ligation of blood vessels around the target tissue is required to prevent bleeding. The hemostasis technique has become one of the cores of the basic operation technique of the surgical operation, the surgical operation of any part of the human body involves bleeding and hemostasis almost without any exception, and the hemostasis is generally performed by using a hemostatic forceps and a ligation clip.

In the surgical operation process, a doctor ligates a blood vessel around a target tissue by using hemostatic forceps, the blood vessel to be clamped is usually placed in a V-shaped jaw formed by two clamping arms firstly, a V-shaped ligation clamp is placed in the V-shaped jaw in advance, and then the blood vessel is clamped by closing the two clamping arms. However, in the existing hemostatic forceps, the V-shaped clamp that is accommodated in the existing hemostatic forceps is clamped and closed by completely closing the V-shaped jaw, because the shape and the size of the V-shaped jaw formed by the two forceps arms are determined, and the shape and the size of the completely closed V-shaped jaw are also determined, the clamping force that the V-shaped jaw is completely closed and applied to one type of V-shaped clamp is fixed, the matching use of the fixed-shape and size V-shaped jaw and the fixed-type V-shaped clamp can only be applied to clamping and closing the blood vessel with the corresponding diameter type, and the clamping force that the fixed-shape and size V-shaped jaw is completely closed and applied to the fixed-type V-shaped clamp cannot be adjusted according to the diameter of the blood vessel to be clamped, that is, the matching use of the fixed-shape and size V-shaped jaw and the fixed-type V-shaped clamp cannot meet the requirements of clamping and closing different thick and thin blood vessels.

There is a hemostat, as shown in fig. 1, comprising a tape cartridge structure, a tape-delivering structure, a firing structure, a forceps arm and a cannula; the tourniquet bin structure comprises at least one strip-shaped tourniquet and a strip bin for accommodating the at least one strip-shaped tourniquet, and the at least one tourniquet is sequentially arranged and stored in the strip bin in the far and near directions; the belt cabin structure is fixedly accommodated in the sleeve; the near end of the forceps arm is fixedly arranged in the sleeve, the far end of the forceps arm is provided with a hook part, the hook part extends out of the sleeve, a belt conveying groove is formed in the forceps arm, the near end of the belt conveying groove is positioned in the sleeve and is communicated with the space in the belt cabin to form a belt conveying channel, and the far end of the belt conveying groove is positioned on the inner side of the hook part and is bent along the shape of the hook part; the far end of the belt conveying structure is inserted into the sleeve, and the belt conveying structure is matched with the tourniquet; the percussion structure is arranged in the sleeve in a penetrating way and is matched with the hook part.

In the process of clamping the blood vessel by the hemostatic forceps, the blood vessel to be clamped is positioned in a jaw formed by a hook bending part, the tourniquet positioned at the farthest end of a tape feeding channel is the tourniquet to be clamped, the tape feeding structure moves far, all the tourniquets in the tape feeding channel are pushed to move far, when the tape feeding structure is positioned at the end position of the tape feeding far end, the far end of the tourniquet to be clamped is bent into an annular part along a tape feeding groove shape so as to surround the blood vessel to be clamped, and the far end part of the tourniquet to be clamped extends out of the tape feeding groove; the trigger structure moves far, and the annular part of the tourniquet to be clamped is patted to realize the clamping of the blood vessel to be clamped.

Above-mentioned hemostatic forceps can realize applying for the power of closing of treating the clamp vascular through the stroke of control trigger structure, the crotch portion of control trigger structure and tong arm to just be applicable to the blood vessel of clamping different thicknesses with the help of a hemostatic forceps, need not frequently to change hemostatic forceps of different models according to treating the diameter difference of clamping the vascular. In particular, the hemostatic forceps are suitable for clamping blood vessels with different thicknesses, and are described as follows: the vascular wall of a thick blood vessel is thicker, the vascular wall of a thin blood vessel is thinner, in order to enable the hemostatic forceps to stably clamp the blood vessel, the distance between the firing structure and the hook part should be less than or equal to the thickness of two vascular walls of the blood vessel to be clamped, but the distance between the firing structure and the hook part cannot be too less than the thickness of the two vascular walls of the blood vessel to be clamped, and the distance between the firing structure and the hook part cannot be too less than the thickness of the two vascular walls of the blood vessel to be clamped, so that vascular wall tissue necrosis can be caused; above-mentioned hemostatic forceps, through the stroke of control trigger structure, can adjust the distance between trigger structure and the crotch and treat two vascular wall thickness of clamping blood vessel with suitable less than or equal to, can control the crotch portion of trigger structure and tong arm promptly and apply for treating the clamping power of clamping blood vessel, and then can be applicable to the different thicknesses of clamping blood vessel.

However, the working process of the trigger structure for closing the blood vessel to be clamped occurs inside the hemostatic forceps sealing shell and is located inside the human body, so that the doctor cannot accurately know the working process of the trigger structure from the outside, and further, it is difficult to control the trigger structure and the clamping force applied to the blood vessel to be clamped by the hook parts of the forceps arms by adjusting the stroke of the trigger structure, so as to clamp the blood vessels with different thicknesses.

Disclosure of Invention

Technical problem to be solved

In view of the problems in the art described above, the present invention is at least partially addressed. To this end, it is an object of the present invention to provide a hemostat capable of displaying the working progress of the firing mechanism on the housing of the adapter, guiding the user to close blood vessels of different thicknesses.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

the invention provides a pair of hemostatic forceps, which comprise an adapter and a belt cabin component;

the belt cabin assembly comprises a first actuating piece, a belt cabin structure, a belt conveying structure, an actuating structure, a clamp arm, a pipe body and a sleeve which are fixedly communicated in sequence from near to far;

the first actuating piece is accommodated in the tube body; the band bin structure comprises at least one strip-shaped tourniquet and a band bin for accommodating at least one strip-shaped tourniquet which is sequentially arranged in the far and near directions, and the band bin structure is accommodated in the sleeve and fixedly connected with the sleeve; the near end of the forceps arm is fixedly arranged in the sleeve, the far end of the forceps arm is provided with a hook part extending out of the sleeve, a belt feeding groove is formed in the forceps arm, the near end of the belt feeding groove is positioned in the sleeve and is communicated with the space in the bin with the bin to form a belt feeding channel, and the far end of the belt feeding groove is positioned on the inner side of the hook part and is bent along the shape of the hook part; the proximal end of the belt conveying structure is connected with the first actuating piece, the distal end of the belt conveying structure is inserted into the sleeve, and the belt conveying structure is matched with the tourniquet; the firing structure penetrates through the sleeve, the near end of the firing structure is connected with the first actuating piece, and the far end of the firing structure is matched with the hook part;

in the process of clamping and closing the blood vessel, the tourniquet located at the farthest end of the tape-sending channel is the tourniquet to be subjected to tape-entering, the first actuating piece drives the tape-sending structure to move far, all the tourniquets in the tape-sending channel are pushed to move far, and when the tape-sending structure is located at the end position of the far end of the tape-sending channel, the far end of the tourniquet to be subjected to tape-entering is bent into an annular part along the shape of the tape-sending groove; the first actuating piece drives the firing structure to move far, and the annular part of the tourniquet to be inserted into the groove is patted;

the adapter comprises a shell and an indicating structure, wherein a first insertion channel is formed at the far end of the shell, and a driving shaft penetrates through the first insertion channel; the near end of the tube body is inserted into the first insertion channel, and the driving shaft is connected with the near end of the first actuating piece;

the indicating structure comprises a motion indicating needle accommodated in the shell and an observation position which is formed on the shell and corresponds to the motion indicating needle; the motion indicating needle is arranged in linkage with the driving shaft, and the indicating end of the motion indicating needle is always positioned in the observation position in the process that the motion indicating needle moves along with the driving shaft; the position on the observation position or the shell close to the motion trail of the indication end of the motion indication needle is marked with firing completion indication scales of at least two blood vessel types with different diameters which are arranged from near to far.

Optionally, the indicating structure further comprises an amplifying structure for amplifying the mechanical motion amplitude, a motion input end of the amplifying structure is connected with the driving shaft, and a motion amplifying output end of the amplifying structure is connected with the motion indicating needle.

Optionally, the viewing position is a transparent cover provided on the housing.

Optionally, the transparent cover is waist-shaped extending in the distal-proximal direction.

Optionally, the motion indicator needle is fixedly mounted on the drive shaft perpendicular to the axial direction of the drive shaft, the motion indicator needle being located at the proximal end of the drive shaft.

Optionally, three blood vessel type firing completion indication scales with different diameters are marked at the observation position or the position on the shell close to the motion track of the indication end of the motion indication needle, and the three blood vessel type firing completion indication scales with different diameters are respectively a thick blood vessel firing completion indication scale, a medium blood vessel firing completion indication scale and a thin blood vessel firing completion indication scale which are arranged from near to far.

Optionally, the lengths of the firing completion indication scales of the three blood vessel types with different diameters are different; wherein, the trigger completion indication scale of the thick blood vessel is the longest, and the trigger completion indication scale of the thin blood vessel is the shortest.

Optionally, the position on the transparent cover or the shell corresponding to each firing completion indication scale is marked with a mark "L", "M" or "S" of the diameter blood vessel type to which the firing completion indication scale belongs, wherein "L" represents a thick blood vessel, "M" represents a medium blood vessel, and "S" represents a small blood vessel.

Optionally, the adapter further comprises a second actuator; the shell is provided with a second insertion channel for selectively inserting the driving assembly, the power output end of the second actuating piece is contained in the shell and connected with the driving shaft, and the power input end of the second actuating piece is positioned in the second insertion channel and connected with the driving assembly.

Optionally, the adapter further comprises a control unit, a prompting unit and a displacement sensor arranged on the driving shaft, the displacement sensor and the prompting unit are both in communication connection with the control unit, the displacement sensor collects displacement data of the driving shaft, the control unit determines current stroke information of the firing structure according to the displacement data and a preset stroke track of the firing structure, and a determination result is output through the prompting unit.

(III) advantageous effects

The invention has the beneficial effects that:

the motion indicator needle which is linked with the driving shaft is matched with the observation phase arranged on the shell, and the firing completion indication scales of at least two blood vessel types with different diameters which are arranged from near to far are marked on the observation phase or the position on the shell, which is close to the motion track of the indication end of the motion indicator needle, so that when the indication scale is completed by moving the indication end of the motion indicator needle to the firing of a certain blood vessel type, the blood vessel with the diameter is fired by the driving shaft driving tape bin assembly, and the user can know the work progress information inside the hemostatic forceps through the observation phase according to the observed motion condition of the motion indicator outside the hemostatic forceps, and further, the user is guided to clamp blood vessels with different thicknesses by using the hemostatic forceps.

Drawings

The invention is described with the aid of the following figures:

FIG. 1 is a schematic cross-sectional view of a hemostat according to an embodiment of the present invention, with the tape-in structure in the tape-in initial position and the firing structure in the firing initial position;

FIG. 2 is an enlarged schematic view of the distal structure of the hemostat of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a hemostat according to an embodiment of the present invention with the tape-delivery structure at the tape-delivery termination location;

FIG. 4 is an enlarged schematic view of the distal structure of the hemostat of FIG. 3;

FIG. 5 is a cross-sectional schematic view of a hemostat according to an embodiment of the present invention with the firing mechanism in an end-of-fire position;

FIG. 6 is an enlarged schematic view of the distal end structure of the hemostat of FIG. 5;

FIG. 7 is a perspective view of a distal end of a jawarm, in accordance with an embodiment of the present invention;

FIG. 8 is a rear perspective view of a jawarm according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a transmission according to an embodiment of the present invention;

FIG. 10 is a schematic illustration of a partial structure of a tape cartridge according to an embodiment of the present invention;

FIG. 11 is a schematic sectional view of a hemostatic forceps according to example 1 of the present invention;

FIG. 12 is an enlarged partial schematic view of the adapter of FIG. 11;

FIG. 13 is a schematic side view of a hemostatic forceps according to example 1 of the present invention;

fig. 14 is an enlarged partial schematic view of the adapter of fig. 13.

[ description of reference ]

1: a tape cartridge assembly;

11: a pipe body; 12: a sleeve;

2: a clamp arm;

21: a hook portion; 22: a belt conveying groove; 23: a straight profile; 24: an arc-shaped surface; 25: a bending surface; 26: a first mounting groove; 27: a second mounting groove; 28: a first clip strip; 29: a second card strip; 30: a first reset member; 31: a second reset member; 32: a first guide surface; 33: a second guide surface;

41: a tourniquet; 42: a belt bin; 43: a tourniquet to be put into the groove; 44: a side top wall; 45: a one-way retaining groove; 46: a stopper wall; 47: sliding out of the wall;

51: the head is clapped; 52: patting the dough;

6: a transmission member;

61: an elastic pushing member; 62: a first raised end; 63: an elastic stopper; 64: a second raised end; 65: a horizontal portion; 66: an inclined portion; 67: a fixed end;

7: conveying the tape sheet;

71: pushing the groove in a one-way manner; 72: a push wall; 73: a sloped wall;

8: an adapter;

81: a first insertion channel; 82: a drive shaft; 83: a housing; 84: a motion pointer; 85: a transparent cover; 86: the trigger completion indication scale of the thick blood vessel; 87: the firing completion indication scale of the medium blood vessel; 88: finishing indication scales for triggering the thin blood vessels; 89: a second insertion channel;

9: a handle;

91: a drive assembly; 92: and a displacement sensor.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. Herein, "proximal" refers to the side closer to the operator, and "distal" refers to the side closer to the patient. As used herein, the terms "upper," "lower," "front," "back," "left," "right," and the like are used with reference to the orientation of FIG. 11, wherein the proximal-to-distal direction is also the rear-to-front direction.

To further clarify the description of the hemostat mentioned in the background of the invention section, reference will now be made in detail as an example with reference to figures 1-10.

As shown in fig. 1-6, the present example provides a hemostat including an adapter 8 and a cartridge assembly 1.

The tape cartridge assembly 1 includes a first actuator (the actuating structure and the working principle thereof are shown in chinese patent CN201911021573.1, the application date is 10/25/2019, and the disclosure date is 04/27/2021, which is incorporated by reference in the present invention, and is not described herein again), a tape cartridge structure, a tape feeding structure, a firing structure, a forceps arm 2, and a tube 11 and a cannula 12 arranged in sequence from near to far.

The distal end of the body 11 communicates with the proximal end of the cannula 12, and the proximal end of the cannula 12 is fixedly attached to the distal end of the body 11. The first actuator is accommodated in the tube body 11.

The band bin structure comprises at least one strip-shaped tourniquet 41 and a band bin 42 for accommodating the at least one strip-shaped tourniquet 41, the at least one tourniquet 41 is sequentially arranged and stored inside the band bin 42 in the far and near direction, the band bin structure is accommodated in the sleeve 12, and the band bin structure is fixedly connected with the sleeve 12. The forceps arm 2 has a straight portion and a hook portion 21 connected in sequence from proximal to distal, the proximal end of the straight portion is fixedly installed in the sleeve 12, the hook portion 21 extends out of the sleeve 12, a tape feed slot 22 is formed on the forceps arm 2, the proximal end of the tape feed slot 22 (i.e., the first end of the tape feed slot 22) is located at the straight portion, and the distal end of the tape feed slot 22 (i.e., the second end of the tape feed slot 22) is located inside the hook portion 21 (i.e., the side of the hook portion 21 facing the sleeve 12) and is bent along the shape of the hook portion 21. The belt bin bottom plate is placed on the straight part, the belt conveying groove 22 is positioned at the far side of the belt bin bottom plate, the bottom surface of the near end of the belt conveying groove 22 is coplanar with the top surface of the belt bin bottom plate, and the end part of the near end of the belt conveying groove is provided with an opening facing the belt bin so as to be communicated with the space in the bin of the belt bin 42; during tape delivery, the tape delivery structure pushes the tourniquet out of the tape magazine base and into the tape slot 22 from the proximal opening of the tape slot 22.

The far end of the belt feeding structure is inserted into the sleeve 12, the belt feeding structure is matched with the tourniquet 41, the near end of the belt feeding structure is inserted into the tube body 11, and the near end of the belt feeding structure is connected with the first actuating part, so that the first actuating part drives the belt feeding structure to move in the far and near directions, and is used for (when the first actuating part drives the belt feeding structure to move far) pushing the tourniquet 41 in the belt feeding channel to move far, and (when the first actuating part drives the belt feeding structure to move near) resetting the belt feeding structure after the tourniquet 41 is pushed to an initial state. In the process of clamping and closing the blood vessel, the tourniquet located at the farthest end of the band bin 42 is the tourniquet 43 to be slotted, the band feeding structure moves far, all the tourniquets in the band bin 42 move far, wherein the tourniquets 43 to be slotted are pushed into the band feeding groove 22, when the band feeding structure is located at the far end position of the band feeding, the far end of the tourniquet 43 to be slotted is bent into a ring-shaped part along the shape of the band feeding groove 22 (as shown in fig. 3 and 4), and the far end part of the tourniquet 43 to be slotted extends out of the band feeding groove 22.

The proximal end of the percussion structure is inserted into the tube body 11, and the proximal end of the percussion structure is connected with the first actuating element, so that after the belt feeding structure finishes belt feeding, the first actuating element drives the percussion structure to move in the far and near directions, and the percussion structure is used for (when the first actuating element drives the percussion structure to move far) patting the ring-shaped part (shown in fig. 5 and 6) of the tourniquet 43 to be inserted into the groove, and is used (when the first actuating element drives the percussion structure to move near) for resetting the percussion structure after patting the tourniquet 41 to the initial state. The ring shape referred to in the present invention means any surrounding shape capable of forming a hollow, not only a ring shape.

According to the belt cabin assembly 1 arranged in the above way, in an initial state, the belt feeding structure is located at the belt feeding initial position, and the firing structure is located at the firing initial position. The hook-shaped part 21 of the forceps arm 2 in the tape cartridge assembly 1 is used for hooking the blood vessel to be clamped, then the first actuating part drives the tape feeding structure to move far, all the tourniquets 41 in the tape cartridge are pushed to move far, the tourniquets 43 to be inserted into the tape feeding groove 22 are pushed to enter the tape feeding groove, the tape feeding structure is located at the tape feeding end position, the distal end of the tourniquet 43 to be inserted into the tape feeding groove 22 is bent to the ring-shaped part along the shape of the tape feeding groove 22, and the blood vessel to be clamped is located inside the ring-shaped part (namely, the ring-shaped part surrounds the blood vessel to be clamped). Then the first actuating piece drives the firing structure to move far to the firing ending position, so that the far end of the firing structure can beat the ring-shaped part of the tourniquet 43 to be inserted into the groove, and the tourniquet 43 to be inserted into the groove can clamp the blood vessel. And finally, the first actuating piece drives the firing structure and the belt feeding structure to reset to the initial state, in the resetting process, firstly, the first actuating piece drives the firing structure to move from the firing ending position to the firing initial position, then, the first actuating piece drives the belt feeding structure to move from the belt feeding ending position to the belt feeding initial position, and the clamped blood vessel is separated from a jaw formed by the hook part 21.

The adapter 8 includes a first insertion passage 81 and a drive shaft 82 inserted into the first insertion passage 81.

The proximal end of the tube body 11 is inserted into the first insertion passage 81, the proximal end of the tube body 11 is connected to the first insertion passage 81, the driving shaft 82 is located at the proximal side of the first actuating member, and the distal end of the driving shaft 82 is connected to the proximal end of the first actuating member for driving the first actuating member. In this example, the proximal end of the tubular body 11 is relatively immovable in the distal-proximal direction with respect to the first insertion passage 81.

Preferably, the belt magazine 42 includes a belt magazine top plate (not shown) at a distal end of the belt magazine 42, and both side portions of the belt magazine top plate are connected to both side walls of the belt magazine 42, respectively; an elastic pressing sheet which is tilted towards the belt conveying groove 22 along the belt conveying direction is arranged on the top plate of the belt cabin; in the process of delivering the tourniquet, the tourniquet 43 to be inserted into the groove is pressed by the elastic pressing piece in the process of entering the groove delivering groove 22.

Preferably, as shown in fig. 7 and 8, a first mounting groove 26 is formed on the left side surface of the far end of the belt feeding groove 22 along the direction of the belt feeding groove 22, and a second mounting groove 27 is formed on the right side surface of the belt feeding groove 22 at a position corresponding to the first mounting groove 26; a first clamping strip 28 is installed in the first installation groove 26, a first side of the first clamping strip 28 extends into the first installation groove 26, a second side of the first clamping strip 28 extends out of the first installation groove 26, and the first side of the first clamping strip 28 is connected with the bottom of the first installation groove 26 through a first resetting piece 30; a second clamping strip 29 is installed in the second installation groove 27, a first side of the second clamping strip 29 extends into the second installation groove 27, a second side of the second clamping strip 29 extends out of the second installation groove 27, and the first side of the second clamping strip 29 is connected with the bottom of the second installation groove 27 through a second resetting piece 31; a curved path for advancing the tourniquet 41 is formed between the first clip strip 28 and the bottom of the tape feed slot 22, and between the second clip strip 29 and the bottom of the tape feed slot 22. The first and second restoring members 30 and 31 may be tension springs, compression springs, rubber members, etc.

So set up, can avoid waiting to go into the mouth tourniquet 43 and break away from send the trough of belt 22 at the in-process that send the tape, send the tape stably, do benefit to the distal end of waiting to go into the mouth tourniquet 43 simultaneously and stably follow the curved ring-shaped portion to of sending the trough of belt 22 molding. In addition, in the process of patting the loop part of the tourniquet 43 to be inserted into the slot at the distal end of the firing structure, the firing structure applies force to pat the tourniquet 43 to be inserted into the first clip strip 28 and the second clip strip 29, the first restoring piece 30 and the second restoring piece 31 yield, so that the first clip strip 28 and the second clip strip 29 respectively retract into the first mounting groove 26 and the second mounting groove 27, at this time, because the thickness of the whole clamping closure body formed by the clamped tourniquet 41 and the clamped blood vessel (i.e. the sum of the thickness of the two layers of tourniquets 41 and the thickness of the two layers of blood vessel walls to be clamped) is large, two side parts of the whole clamping closure body respectively abut against the first clip strip 28 and the second clip strip 29, the first clip strip 28 is limited from protruding from the first mounting groove 26, and the second clip strip 29 is limited from protruding from the second mounting groove 27, so that the whole clamping closure body is easily released from the belt feeding groove 22 after the firing structure is restored.

It is further preferred that the first card strip 28 has a first guide surface 32 extending outwardly from the tape feed slot 22 into the tape feed slot 22 on a second side thereof, the first guide surface 32 being disposed outwardly of the tape feed slot 22, the first guide surface 32 extending from a first end of the first card strip 28 to a second end of the first card strip 28, the second card strip 29 has a second guide surface 33 extending outwardly from the tape feed slot 22 into the tape feed slot 22, the second guide surface 33 being disposed outwardly of the tape feed slot 22, the second guide surface 33 extending from a first end of the second card strip 29 to a second end of the second card strip 29. In this way, through the first guide surface 32 and the second guide surface 33, the force applied by the firing structure is facilitated to beat the tourniquet 43 to be inserted into the groove and act on the first clamping strip 28 and the second clamping strip 29, so that the first restoring piece 30 and the second restoring piece 31 are yielded.

Further preferably, the first end of the curved channel is located at the proximal end of the tape feeding slot 22, the second end of the curved channel is located at the top of the hook portion 21, and during the process of advancing the tourniquet 43 to be inserted into the tape feeding slot 22, the distal end of the tourniquet 43 to be inserted into the tape feeding channel enters the tape feeding channel, and the proximal end of the tourniquet 43 to be inserted into the tape feeding slot is pressed by the elastic pressing piece 49. In this way, the stability of the tourniquet 43 to be inserted into the tape-feeding slot 22 is further improved, and the mechanism is prevented from being locked.

Preferably, in this example, the firing structure, the tape feed structure, the tape cartridge structure, and the jawarms 2 are arranged in sequence from top to bottom within the sleeve 12. Further preferably, when the tape-delivering structure is located at the distal end of the tape-delivering structure, the tourniquet 43 to be inserted into the tape-delivering groove is integrally bent into a loop along the shape of the tape-delivering groove 22.

Preferably, as shown in fig. 2, the distal end of the bottom surface of the belt feeding groove 22 comprises an arc surface 24 and a bending surface 25 which are connected in sequence, the arc surface 24 extends from the bottom of the hook 21 to the top of the hook 21, the arc surface 24 extends along the same direction as the hook 21, the bending surface 25 is located at the top of the hook 21, the bending surface 25 extends downward deviating from the direction of the hook 21, and the tangential direction of the free end of the bending surface 25 is toward the bottom of the hook 21. So, through setting up arcwall face 24, do benefit to tourniquet 41 and bend along the trend of hook 21, through setting up plane of bending 25, do benefit to tourniquet 41 and bend down and form the loop-shaped portion in order to wrap up the blood vessel of waiting to clamp. Further preferably, the arc surface 24 is a circular arc surface.

It is further preferred that the arc surface 24 has a first connecting position for connecting with the bending surface 25, the bending surface 25 has a second connecting position for connecting with the arc surface 24, and an included angle formed by a tangential direction of the first connecting position in the far and near direction and a tangential direction of the second connecting position in the far and near direction is greater than 100 °.

Preferably, as shown in fig. 3, the distal end of the firing structure has a stapling head 51 for stapling the loop of the tourniquet 41, and the distal portion of the stapling head 51 has a stapling surface 52 disposed to accommodate the arcuate surface 24; during firing, the clapper head 51 moves distally into the hook slot of the hook 21. Further preferably, the bottom of the clapping head 51 is opened with a groove (not shown in the figure) for the distal end of the tape feeding piece 7 to pass through.

The belt feeding structure comprises a transmission member 6 and a belt feeding segment 7. As shown in fig. 1, the transmission member 6 is located inside the tape cartridge 42 and is placed adjacent to the terminal tourniquet 41, that is, the distal end of the transmission member 6 can abut against the tail of the terminal tourniquet 41 when necessary to push the terminal tourniquet 41, thereby pushing the remaining tourniquets 41 except the tourniquets 43 to be grooved to move distally.

The transmission member 6 includes a first transmission structure capable of forming a one-way transmission connection relationship with the belt feeding sheet 7, and the first transmission structure may be an elastic pushing member 61 formed on the transmission member 6 as exemplarily shown in fig. 10. The resilient pusher 61 is preferably a pre-formed elongated cantilevered structure in its natural state (i.e., when the driving element 6 is removed from the interior of the tape magazine 42), which cantilevered structure is angled away from the distal end of the driving element 6 toward the proximal end of the driving element 6 and above the driving element 6 at an angle to the driving element 6, while the free end of the cantilevered structure is formed to abut against a first angled end 62 of the tape blade 7. The belt feeding plate 7 is also formed with a second transmission structure in a one-way transmission connection relationship with the elastic pushing member 61, especially with the first tilting end 62 of the elastic pushing member 61, and the second transmission structure is a plurality of one-way pushing grooves 71 opened at the bottom of the belt feeding plate 7 and exemplarily shown in fig. 2, for engaging with the elastic pushing member 61 arranged on the transmission member 6.

Preferably, the proximal end wall of the one-way push groove 71 is a push wall 72, and the distal end wall of the one-way push groove 71 is an inclined wall 73 inclined toward the distal end; the elastic pushing member 61 is naturally located in one of the plurality of one-way pushing grooves 71, when the tape feeding segment 7 moves towards the distal end of the tape magazine 42, the proximal end wall of the one-way pushing groove 71 and the elastic pushing member 61 form a same-direction pushing transmission, that is, the first tilting end 62 of the elastic pushing member 61 is engaged in one of the one-way pushing grooves 71 and abuts against the proximal end wall of the engaged one-way pushing groove 71, so that when the tape feeding segment 7 moves towards the distal end, the tilting end abuts against the proximal end wall, so that the transmission member 6 moves towards the distal end synchronously. After the tape feeding piece 7 finishes one time of feeding the tape into the tape feeding groove 22, when the tape feeding piece moves towards the proximal end of the tape chamber 42 for resetting, the first tilting end 62 of the elastic pushing piece 61 is separated from the state of abutting against the proximal end wall, and slides along the distal end wall of the one-way pushing groove 71 until the two are separated from each other and enter the next one-way pushing groove 71.

The driving member 6 further includes a first stopping structure formed thereon for preventing the driving member 6 from moving toward the proximal end of the tape magazine 42, and the first stopping structure may be an elastic stopper 63, as exemplarily shown in fig. 9, and the elastic stopper 63 is a stopper spring provided on the driving member 6, and the stopper spring is preferably tilted toward at least one side of the top of the tape magazine 42 at a middle portion in the left-right direction of the driving member 6. Preferably, the resilient stop member 63 is integrally formed to protrude above the upper surface of the driving member 6 to a height that exceeds the top of the magazine 42, so that the second raised end 64 of the resilient stop member 63, which is raised toward at least one side of the top of the magazine 42, can be accurately engaged with at least one side of the top of the magazine 42, and the driving member 6 is not moved proximally when the tape blade 7 is moved proximally to be reset.

In this example, the elastic stopper 63 preferably includes a horizontal portion 65 and an inclined portion 66 which are located on the same horizontal plane and are arranged at an angle to each other, the horizontal portion 65 being located on the distal side than the inclined portion 66, and the horizontal portion 65 extending in the proximal and distal direction parallel to the axis of the belt magazine 42 and being located in the middle of the transmission member 6 in the left-right direction, as shown in fig. 9. The fixed end 67 of the horizontal portion 65 connected to the transmission member 6 is the distal end of the elastic stop member 63, and the other end of the horizontal portion 65 is connected to one end of the inclined portion 66, and the inclined portion 66 extends/tilts from the connected end toward at least one side of the top of the belt magazine 42 to form a second tilting end 64, that is, the inclined portion 66 extends/tilts from the connected end toward the left and/or right. In use, the angle between the horizontal portion 65 and the inclined portion 66 is such as to allow the drive member 6 to move distally within the tape magazine 42. The fixed end 67 is shown in the exemplary embodiment of fig. 10 as being generally "T" shaped.

Preferably, a side top wall 44, which is substantially parallel to the belt magazine floor, extends perpendicularly to one of the side walls of the belt magazine 42 at the top thereof, the side top wall 44 being substantially level with the resilient stop 63 of the drive member 6, and more preferably the resilient stop 63 may be slightly taller than the side top wall 44 to ensure that the resilient stop 63 engages a second stop formation provided in the side top wall 44 to prevent unwanted movement of the drive member 6 towards the proximal end of the belt magazine 42. The second stop structures provided on the side top wall 44 of the tape cartridge 42 may have different configurations, one of which is shown in this example as a one-way stop slot 45; as shown in fig. 10, the opening notch of the one-way stopping groove 45 is horizontally oriented toward the middle portion of the top portion of the tape deck 42 in the left-right direction, so as to facilitate the elastic stopping member 63 integrally protruded from the driving member 6, and is horizontally oriented toward the top wall 44 on the side of the tape deck 42 from the middle portion of the driving member 6 to tilt into the one-way stopping groove 45. Wherein the one-way stop groove 45 has a proximal end wall which is a stop wall 46 and a distal end wall which is a slide-out wall 47 adapted to slide the resilient stop member 63 to enter the next one-way stop groove 45 in the distal direction. The elastic stopping piece 63 is positioned in one-way stopping groove 45 in a natural state, in the process that the belt feeding piece 7 moves towards the far end of the belt bin 42, due to the one-way transmission connection between the transmission piece 6 and the belt feeding piece 7, the transmission piece 6 moves towards the far end along with the belt feeding piece 7, at the moment, the sliding-out wall 47 forms bias on the second tilting end 64 of the elastic stopping piece 63, and along with the further movement towards the far end of the transmission piece 6, the second tilting end 64 slides to be separated from the original one-way stopping groove 45 and enters the next one-way stopping groove 45 towards the far end to be jointed with the next one-way stopping groove 45; when the tape-feeding piece 7 moves towards the proximal end of the magazine 42, the stopper wall 46 of the one-way stopper groove 45 forms an abutment stopper with the second raised end 64 of the elastic stopper 63, thereby preventing the driving element 6 from sliding towards the proximal end of the magazine 42.

In this example, the tourniquet 43 to be slotted is pushed by the tape-feeding head, and in order to facilitate the pushing of the tourniquet 43 to be slotted, a notch for accommodating the head of the tape-feeding head is preferably formed at the proximal end and/or the distal end of the tourniquet. Thus, a space for accommodating the head of the tape feeding sheet is formed between the adjacent tourniquets through the notch, so that the head of the tape feeding sheet can be pushed to the tourniquet 43 to be put into the groove conveniently.

In the resetting process of the tape feeding structure, the tape feeding structure advances towards the proximal end of the tape cabin, and due to the blocking of the adjacent tourniquet near the tourniquet to be inserted into the tape 43 and the elasticity of the head of the tape feeding piece, the head of the tape feeding piece can move to the notch 48 to stop over the adjacent tourniquet near the head of the tape feeding piece, so that preparation is made for next tape feeding and firing.

Example 1

As shown in fig. 11, on the basis of the hemostat provided in the foregoing detailed description, in the hemostat provided in the present embodiment, the adapter 8 further includes a housing 83, a distal end of the housing 83 forms a first insertion channel 81, and the driving shaft 82 is inserted into the first insertion channel 81 (i.e. a proximal end of the driving shaft 82 is accommodated in the housing 83, and a distal end of the driving shaft 82 is located in the first insertion channel 81). The proximal end of the tubular body 11 is selectively inserted into the first insertion passage 81, and the drive shaft 82 is connected to the proximal end of the first actuator, and the drive shaft 82 linearly moves along the axial direction thereof for driving the first actuator.

As can be seen, the working process of the hemostatic forceps mainly comprises clip feeding and firing, wherein the clip feeding and the firing are sequentially realized and are realized by driving a first actuating part by a driving shaft 82 which does linear motion. Based on this, in order to solve the problems in the background art, the present application provides a hemostatic forceps having the following structure.

As shown in fig. 11 to 14, the adapter 8 further includes an indicating structure for indicating the movement position of the drive shaft 82; the indicating structure includes a movement indicating needle 84 accommodated in a housing 83 and an observing position formed on the housing 83 and provided corresponding to the movement indicating needle 84, through which the inside of the housing 83 can be observed from the outside of the housing 83; the motion indicating needle 84 is in linkage with the driving shaft 82, and in the process that the motion indicating needle 84 moves along with the driving shaft 82, the indicating end of the motion indicating needle 84 always faces to the observation position; at the observation position or the position on the shell 83 close to the indicating end motion track of the motion indicating needle 84, firing completion indicating scales of at least two blood vessel types with different diameters which are arranged from near to far are marked.

Thus, when the indicating end of the motion indicating needle 84 moves to the firing completion indicating scale of a certain diameter blood vessel type, the driving shaft 82 drives the tape cartridge assembly 1 to fire the diameter blood vessel to completion. The hemostatic forceps have the advantages that the user can know the work progress information inside the hemostatic forceps through the observation position according to the observed movement condition of the movement pointer outside the hemostatic forceps, and then the user is guided to clamp and close blood vessels with different thicknesses by using the hemostatic forceps.

Preferably, in this embodiment, the viewing position is a transparent cover 85 provided on the housing 83. Of course, the transparent cover 85 provided on the housing 83 is merely preferable as the observation site, and it is conceivable that the observation site is a through hole provided in the housing 83, and a similar effect can be achieved.

Preferably, the motion indicator pin 84 is fixedly mounted on the drive shaft 82 perpendicular to the axial direction of the drive shaft 82, with the motion indicator pin 84 being located at the proximal end of the drive shaft 82. Therefore, the structure is compact, and meanwhile, the pointer is arranged close to a user, so that the user can observe conveniently. Of course, it is merely preferred that the motion indicator needle 84 be disposed at the proximal end of the drive shaft 82, and it is contemplated that a similar effect could be achieved by disposing the motion indicator needle 84 at the middle or distal end of the drive shaft 82.

Further preferably, in the present embodiment, the movement indicating needle 84 and the transparent cover 85 are both provided on the left side of the drive shaft 82. In this way, when the hemostatic forceps are held by the right hand of the user, the user can observe the movement of the movement indicator needle 84.

Further preferably, in the present embodiment, the transparent cover 85 is a waist shape extending in the proximal and distal directions.

Further preferably, in the present embodiment, firing completion indication scales for blood vessel types of different diameters are marked on the transparent cover 85.

Further preferably, three blood vessel type firing completion indicating scales with different diameters are marked on the observation position or the position on the shell 83 close to the motion track of the indication end of the motion indication needle 84, and the three blood vessel type firing completion indicating scales with different diameters are respectively a thick blood vessel firing completion indicating scale 86, a medium blood vessel firing completion indicating scale 87 and a thin blood vessel firing completion indicating scale 88 which are arranged from near to far; wherein, the thick blood vessel is the blood vessel with the diameter of 5-7 mm, the medium blood vessel is the blood vessel with the diameter of 3-5 mm, and the thin blood vessel is the blood vessel with the diameter of 1-3 mm.

Certainly, the observation position or the position on the housing 83 near the motion track of the indication end of the motion indication needle 84 is marked with 2 firing completion indication scales of different diameter blood vessel types, and the 2 firing completion indication scales of different diameter blood vessel types are respectively a firing completion indication scale 86 of a thick blood vessel and a firing completion indication scale 88 of a thin blood vessel which are arranged from near to far; wherein, the thick blood vessel is the blood vessel with the diameter of 4-7 mm, and the thin blood vessel is the blood vessel with the diameter of 1-4 mm. Similar effects can be achieved.

It is further preferred that the lengths of the firing completion indication scales of the three blood vessel types with different diameters are different, wherein the firing completion indication scale 86 of the thick blood vessel is the longest, and the firing completion indication scale 88 of the thin blood vessel is the shortest.

In order to further distinguish the firing completion indicating scales of the blood vessel types with different diameters, in the present embodiment, the transparent cover 85 is marked with the mark "L", "M", or "S" of the blood vessel type with the diameter to which the firing completion indicating scale belongs at the position corresponding to each firing completion indicating scale, where "L" represents a thick blood vessel, "M" represents a medium blood vessel, and "S" represents a small blood vessel.

Preferably, as shown in fig. 11, the hemostat further comprises a drive assembly 91; the adapter 8 further comprises a second actuating member, the housing 83 being formed with a second insertion passage 89, the power input end of the second actuating member being located in the second insertion passage 89, the power output end of the second actuating member being housed in the housing 83 and connected to the drive shaft 82 for driving the drive shaft 82; the driving assembly 91 is selectively inserted into the second insertion channel 89, and the power output end of the driving assembly 91 is connected with the power input end of the second actuating member for driving the second actuating member. The adapter 2 that so sets up, under the circumstances that the electricity became invalid in the use, can select manpower drive assembly 91 to peg graft in second inserting passageway 89, can also realize motion pointer 84 prompt facility when realizing sending the function of pressing from both sides and the trigger function, that is to say, the hemostatic forceps that this embodiment provided still can show hemostatic forceps work process information to the user under the electricity condition of becoming invalid, guides the user to accomplish the operation.

Further preferably, in the present embodiment, the second insertion channel 89 is formed at the bottom of the housing 83, the hemostatic forceps further comprises a handle 9, the driving assembly 91 is accommodated in the handle 9, the power output end of the driving assembly 91 extends out of the top end of the handle 9, the top end of the handle 9 is selectively inserted into the second insertion channel 89, and the power output end of the driving assembly 91 is connected with the power input end of the second actuating member.

Preferably, as shown in fig. 12, the adaptor 8 further includes a control unit, a prompting unit and a displacement sensor 92 disposed on the driving shaft 82, the displacement sensor 92 and the prompting unit are both in communication connection with the control unit, the displacement sensor 92 collects displacement data of the driving shaft 82, the control unit determines current stroke information of the firing structure according to the displacement data and a preset stroke track of the firing structure, and a determination result is output through the prompting unit. Therefore, on the basis that the mechanical structure displays the internal work process information of the hemostatic forceps, the integrated electrical control displays the internal work process information of the hemostatic forceps, and a user can be guided to clamp and close the blood vessel conveniently.

Further, the reminding unit can be a display unit or a playing unit, preferably a display unit, specifically a display screen. The user can see the working process information inside the hemostatic forceps in the current clamping operation through the display unit.

In particular, in the present embodiment, the display unit is a display screen integrated at the proximal end of the adapter 8.

Example 2

The present embodiment is mainly different from embodiment 1 in that:

the adapter 8 comprises a first motion indicator needle and a second motion indicator needle which are accommodated in the shell 21 and keep linkage with the driving shaft, a first transparent cover and a second transparent cover are arranged on the shell 21, the indicating end of the first motion indicator needle faces the first transparent cover, the indicating end of the second motion indicator needle faces the second transparent cover, the indicating end of the first motion indicator needle follows the motion process of the driving shaft and completely occurs in the first transparent cover, and the indicating end of the second motion indicator needle follows the motion process of the driving shaft and completely occurs in the second transparent cover. The positions, close to the motion trail of the motion indicating needle indicating end, of the first transparent cover and the second transparent cover are marked with firing completion indicating scales of at least two blood vessel types with different diameters, which are arranged from near to far. Therefore, the user can observe the motion condition of the motion pointer conveniently.

Preferably, the first movement indicating needle and the first transparent cover are disposed on the left side of the drive shaft, and the second movement indicating needle and the second transparent cover are disposed on the right side of the drive shaft.

The rest of the parts which are the same as those in embodiment 1 are not described in detail herein.

Example 3

The main differences between the present embodiment and embodiment 1 are:

the indicating structure further includes an amplifying structure for amplifying the amplitude of the mechanical movement, the amplifying structure having a movement input end and a movement amplifying output end, the movement input end of the amplifying structure being connected to the drive shaft 82 and the movement amplifying output end of the amplifying structure being connected to the movement indicating needle 84. So configured, the amplitude of the movement for firing stroke adjustment that occurs on the drive shaft 82 is magnified by the magnifying structure to be represented by the movement indicating needle 84 for convenient observation by the user.

It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.

Claims (10)

1. A hemostat, comprising an adapter (8) and a cartridge assembly (1);

the belt cabin assembly (1) comprises a first actuating piece, a belt cabin structure, a belt conveying structure, an actuating structure, a clamp arm (2), a pipe body (11) and a sleeve (12) which are fixedly communicated in sequence from near to far;

the first actuating piece is accommodated in the tube body (11); the band bin structure comprises at least one strip-shaped tourniquet (41) and a band bin (42) for accommodating at least one strip-shaped tourniquet (41) which are sequentially arranged in the far and near direction, and the band bin structure is accommodated in the sleeve (12) and is fixedly connected with the sleeve (12); the near end of the forceps arm (2) is fixedly arranged in the sleeve (12), the far end of the forceps arm (2) is provided with a hook part (21) extending out of the sleeve (12), a belt conveying groove (22) is formed in the forceps arm (2), the near end of the belt conveying groove (22) is positioned in the sleeve (12) and communicated with the space in the belt cabin (42) to form a belt conveying channel, and the far end of the belt conveying groove (22) is positioned on the inner side of the hook part (21) and is bent along the shape of the hook part (21); the proximal end of the tape-feeding structure is connected with the first actuating component, the distal end of the tape-feeding structure is inserted into the sleeve (12), and the tape-feeding structure is matched with the tourniquet (41); the firing structure is arranged in the sleeve in a penetrating way, the near end of the firing structure is connected with the first actuating piece, and the far end of the firing structure is matched with the hook part (21);

in the process of clamping and closing the blood vessel, the tourniquet (41) positioned at the farthest end of the tape-feeding channel is a tourniquet (43) to be subjected to groove-feeding, the first actuating piece drives the tape-feeding structure to move far, all the tourniquets (41) in the tape-feeding channel are pushed to move far, and when the tape-feeding structure is positioned at the end position of the far end of the tape-feeding, the far end of the tourniquet (43) to be subjected to groove-feeding is bent into an annular part along the shape of the tape-feeding groove (22); the first actuating piece drives the firing structure to move far, and the annular part of the tourniquet (43) to be inserted into the slot is patted;

the adapter (8) comprises a shell (83) and an indicating structure, wherein a first insertion channel (81) is formed at the far end of the shell (83), and a driving shaft (82) penetrates through the first insertion channel (81); the proximal end of the tube body (11) is inserted into the first insertion channel (81), and the driving shaft (82) is connected with the proximal end of the first actuating piece;

the indicating structure comprises a movement indicating needle (84) accommodated in the shell (83) and an observation position which is formed on the shell (83) and is arranged corresponding to the movement indicating needle (84); the motion indicating needle (84) is arranged in a linkage manner with the driving shaft (82), and in the process that the motion indicating needle (84) moves along with the driving shaft (82), the indicating end of the motion indicating needle (84) is always positioned in the observation position; at the observation position or the position on the shell (83) close to the motion trail of the motion indicating needle indicating end, firing completion indicating scales of at least two blood vessel types with different diameters are marked from near to far.

2. The hemostat of claim 1,

the indicating structure further comprises an amplifying structure for amplifying the mechanical motion amplitude, wherein the motion input end of the amplifying structure is connected with the driving shaft (82), and the motion amplifying output end of the amplifying structure is connected with the motion indicating needle (84).

3. The hemostat of claim 1,

the observation position is a transparent cover (85) arranged on the shell (83).

4. The hemostat of claim 3,

the transparent cover (85) is waist-shaped extending along the far and near direction.

5. The hemostat of claim 1,

the motion indicator needle (84) is fixedly arranged on the driving shaft (82) perpendicular to the axial direction of the driving shaft (82), and the motion indicator needle (84) is arranged at the proximal end of the driving shaft (82).

6. The hemostat of claim 1,

three blood vessel type firing completion indicating scales with different diameters are marked on the observation position or the position, close to the motion track of the indication end of the motion indication needle, on the shell (83), and are respectively a thick blood vessel firing completion indicating scale (86), a medium blood vessel firing completion indicating scale (87) and a thin blood vessel firing completion indicating scale (88) which are arranged from near to far.

7. The hemostat of claim 6,

the lengths of the firing completion indication scales of the three blood vessel types with different diameters are different;

wherein, the firing completion indication scale (86) of the thick blood vessel is the longest, and the firing completion indication scale (88) of the thin blood vessel is the shortest.

8. Hemostatic forceps according to claim 6 or 7,

the position of the transparent cover (85) or the shell (83) corresponding to each firing completion indication scale is marked with a mark L, M or S of the diameter blood vessel type to which the firing completion indication scale belongs, wherein L represents a thick blood vessel, M represents a medium blood vessel, and S represents a small blood vessel.

9. The hemostat of claim 1,

the adapter (8) further comprises a second actuator;

the housing (83) is formed with a second insertion channel (89) for selectively inserting the driving assembly, the power output end of the second actuator is accommodated in the housing (83) and connected with the driving shaft (82), and the power input end of the second actuator is positioned in the second insertion channel (89) and connected with the driving assembly.

10. The hemostat of claim 1,

the adapter (8) further comprises a control unit, a prompting unit and a displacement sensor (92) arranged on the driving shaft (82), the displacement sensor (92) and the prompting unit are both in communication connection with the control unit, the displacement sensor (92) collects displacement data of the driving shaft (82), the control unit determines current stroke information of the firing structure according to the displacement data and a preset stroke track of the firing structure, and a determination result is output through the prompting unit.

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