Electrocauterization instrument for endoscopic therapy

Abstract

An electrocauterization instrument for endoscopic therapy when using an electrocauterization rod (10), consisting of: a handle (110) comprising a cylindrical part (120), a fastening element (122) and at least one protruding fastening element (130), wherein the fastening element (122) and the protruding fastening element (130) are arranged on the cylindrical part (120) and the cylindrical part (120) further comprising a first hole (140) and a rotatable positioning part (200) that surrounds the cylindrical part (120), the rotatable positioning part (200) further comprising a rotatable element (210), a second hole (220), at least one clamping part (230) and a plurality of fastening units (250); the rotatable element (210) is rotatably connected to the cylindrical part (120), the clamping part(s) (230) being located on a side wall of the second hole (220) and connecting to the fastening element (122); the fastening units (250) are each recessed into the side wall of the second hole (220), the rotatable element (210) being arranged according to the protruding fastening element(s) (130);The rotatable element (210) serves to rotate the rotatable positioning part (200) so that at least one of the protruding fastening elements (130) is positioned on one of the corresponding fastening units (250) and the electrocauterization rod (10) is guided through the second hole (220) and the first hole (140) respectively, in order to be operated with the handle (110), characterized in that; the rotatable positioning part (200) further consists of a positioning element (260), a third hole (270) and a bore (280); the third hole (270) is connected to the second hole (220), the bore (280) is located on the rotatable positioning part (200) and is connected to the third hole (270), the diameter of the third hole (270) being smaller than the diameter of the second hole (220) and the positioning element (260) being located radially in the direction of the third hole (270) in the bore (280) in order to position the electrocautery rod (10) in a radial direction.

Description

[0001] The present invention relates to an electrocauterization instrument, in particular a disposable electrocauterization instrument for endoscopic therapy.

[0002] Recently, there has been a trend in surgical procedures towards minimally invasive surgery (MIS) to reduce surgical trauma. Compared to traditional techniques, MIS is characterized by smaller incisions, less surgical trauma, faster recovery, and less pain.

[0003] Example of endoscopic MIS: During the surgical procedure, various instruments with long handles are used, allowing the surgeon to cut, sever, clamp, etc., in a very confined space. Electrosurgical units (ESUs) with minimally invasive electrocautery instruments such as scissors or clamps are used. The tips of the electrocautery instruments discharge high-frequency electrical currents into the blood vessels, muscles, or tissues to surgically treat them, i.e., to cut, cauterize (to stop bleeding), strip, cut, suture, or knot using electrocautery.

[0004] For improved hygiene and safety, electrocautery instruments, like conventional needles, should be discarded after a single use. Currently, electrocautery instruments for endoscopic MIS consist of too many components and parts, making assembly highly impractical. The excessive number of components and parts necessitates too many manufacturing modules, assembly is complicated, and automated production remains at a low level, resulting in high manufacturing costs. German patent application DE 203 09 776 U1 discloses a surgical instrument comprising a shaft, a handle, and a coupling device for axially connecting the shaft to the handle in a coupled position.

[0005] In view of the aforementioned problems, the aim is to solve the problems of high production costs and complicated assembly.

[0006] The aim of the present invention is to create an electrocautery instrument for endoscopic therapy, which has the same functionality as conventional electrocautery tools, but reduces the number of components to the smallest possible number and greatly reduces production costs.

[0007] Another objective of the present invention is to create an electrocauterization instrument for endoscopic therapy, the construction of which is simpler and which can be assembled much faster, so that it can also be assembled and produced automatically.

[0008] The present invention provides an electrocautery instrument for endoscopic therapy according to claim 1. Further advantageous embodiments are defined in the dependent claims. The electrocautery instrument for endoscopic therapy essentially consists of a handle and a rotatable positioning element. The handle, in turn, essentially consists of a cylindrical part, a fastening element, and at least one protruding fastening element. The fastening element and the protruding fastening element are arranged on the cylindrical part, which has a first hole. The rotatable positioning element surrounds a cylindrical part and further consists of a rotatable element, a second hole, at least one clamping element, and several fastening units. The rotatable element is rotatably connected to the cylindrical part.The clamping element is located on one side wall of the second hole and connects to the fastener. All fasteners are recessed into the side wall of the second hole, with the rotating element positioned according to the protruding fasteners. The rotating element serves to turn the rotating positioning element so that the protruding fastener can be positioned on one of the corresponding fasteners. The electrocautery rod passes through the second hole and the first hole to be operated by the handle.

[0009] The present invention functions as follows: When a surgeon rotates the rotatable positioning element with their hands, the protruding fastening element of the cylindrical part is pressed against the fastening units. This produces a quiet sound, which gives the surgeon a better sense of position and hand position during the operation. The present invention also has a simpler design with lower manufacturing costs and can be disposed of after a single use. This helps to avoid secondary infections.

[0010] The invention is described in detail below with reference to a preferred embodiment and the drawing. The drawing shows: Fig. 1 a schematic, perspective view of an electrocauterization instrument according to the present invention, Fig. 2 a schematic exploded view of the electrocauterization instrument according to the present invention, Fig. 3 a sectional view of the electrocauterization instrument according to the present invention, Fig. 4 an exploded view of the sectional representation of the electrocauterization instrument according to the present invention, Fig. 5 a schematic perspective view of a rotatable positioning part according to the present invention, Fig. 6 a sectional view showing how the positioning element positions an electrocauterization rod according to the present invention, and Fig. 7 a sectional view showing that all protruding fastening elements are located on a corresponding fastening unit in accordance with the present invention.

[0011] The description and the attached illustrations of the invention disclosed herein are only exemplary and illustrative and do not limit the scope of the invention.

[0012] Fig. Figure 1 is a perspective schematic representation of an electrocautery instrument 100 according to the present invention. The present invention provides an electrocautery instrument 100 for endoscopic therapy, which is used with an electrocautery rod 10. The electrocautery rod 10 referred to herein is only one embodiment of the present invention. In another embodiment, it may also be scissors, a clamp, or another electrocautery tool. The electrocautery instrument 100 consists of a handle 110 and a rotatable positioning part 200.

[0013] Fig. 2 and Fig. 3 - Fig. Figure 2 is a schematic exploded view of the electrocauterization instrument 100 according to the present invention. Fig. Figure 3 is a sectional drawing of the electrocautery instrument 100 according to the present invention. The handle 110 has a cylindrical part 120, a fastening element 122, and at least one protruding fastening element 130. The fastening element 122 and the protruding fastening element 130 are located on the outside of the cylindrical part 120, the cylindrical part 120 forming a first hole 140 through which the electrocautery rod 10 is guided. The fastening element 122 described above essentially further comprises a flange 124 and a recess 126. One side of the flange 124 forms a chamfer angle 128, and the flange 124 is located adjacent to the recess 126. The protruding fastening elements 130 are preferably located on the two sides of the cylindrical part 120.They protrude from a recess 132 in the cylindrical part 120, so that the upper edge of the two protruding fastening elements 130 can extend above the surface of the cylindrical part 120.

[0014] The rotatable positioning part 200 surrounds the cylindrical part 120. The rotatable positioning part 200 essentially consists of a rotatable element 210, a second hole 220, at least one clamping part 230, and several fastening units 250. The rotatable element 210 is rotatably connected to the cylindrical part 120 (a dotted line in Fig. Figure 3 indicates a direction of rotation of the rotatable element 210). The clamping part 230 is located on a side wall of the second hole 220 and connects to the fastening element 122. The fastening units 250 lie side by side on and around the side wall of the second hole 220.

[0015] Fig. Figure 4 is an exploded view of the sectional view of the electrocautery instrument 100 according to the present invention. The clamping element 230 is located in a fourth hole 290, which is connected to the second hole 220. The rotatable positioning element 200 essentially further comprises a positioning element 260, a third hole 270, a through-hole 280, and a base 292. The rotatable positioning element 200 also has three holes arranged in a ladder-like pattern. The three holes are the second hole 220, the third hole 270, and the fourth hole 290. The second hole 220, the third hole 270, and the fourth hole 290 are connected to each other and are preferably arranged on the same axis. In other embodiments, they need not be arranged on the same axis; the arrangement can be modified according to the circumstances. The present invention is not limited to the described arrangement.

[0016] During a process in which the rotatable positioning part 200 surrounds the cylindrical part 120, the cylindrical part 120 can only be assembled until it abuts the round deflecting plate 222 at a boundary between the third hole 270 and the second hole 220. Thus, when assembling the rotatable positioning part 200 and the handle 110, the cylindrical part 120 is guided into the fourth hole 290 and the second hole 220, but not into the third hole 270.

[0017] The diameter of the third hole 270 is also smaller than the diameter of the second hole 220. The second hole 220 is located between the fourth hole 290 and the third hole 270, and the diameter of the fourth hole 290 is larger than the diameter of the second hole 220. The diameter of the first hole 140 lies between the diameter of the second hole 220 and the diameter of the third hole 270.

[0018] The base 292 of the fourth hole 290 is perpendicular to the side wall of the fourth hole 290.

[0019] The clamping part 230 extends vertically from the base 292 into the fourth hole 290. It engages with the fastening element 122 of the cylindrical part 120.

[0020] Fig. Figure 5 is a schematic perspective view of the rotatable positioning part 200 according to the present invention. The clamping part 230 further comprises a projecting arm 232 and a hook 234, the hook 234 being located at one end of the projecting arm 232. When the rotatable positioning part 200 surrounds the cylindrical part 120, the projecting arm 232 can elastically connect the hook 234 to the fastening element 122. When the rotatable positioning part 200 surrounds the cylindrical part 120, the hook 234, which also has an inclined surface (not shown in the figure), passes over the flange 124 with a chamfer angle 128. Only a very small force is then required to allow the hook 234 of the clamping part 230 to slide elastically over the flange 124 into the recess 126.

[0021] In a preferred embodiment of the present invention, there can be three clamping parts 230. When the rotatable positioning part 200 surrounds the cylindrical part 120, the three clamping parts 230 can be stably fixed onto the cylindrical part 120. The number of clamping parts 230 can vary according to requirements and is not limited to the disclosures of the present invention. The rotatable positioning part 200 can therefore be very conveniently placed on the cylindrical part 120 of the handle 110 without detaching itself.

[0022] It should be noted that one of the technical features of the present invention is that the bore 280 is located on a lateral edge of the rotatable positioning part 200, and that the bore 280 is connected to the third hole 270 (see Fig. 4) so ​​that the positioning element 260 can slide through, wherein the positioning element 260 can be a screw, a bolt, a pin, or a key. In the preferred embodiment of the present invention, the positioning element 260 is the screw with which the electrocautery rod 10 can be better positioned or fixed, or with which the electrocautery rod 10 can be released. The positioning element 260, which is arranged radially to the third hole 270 (not shown), can position the electrocautery rod 10 in a radial direction.

[0023] In Fig. In Figure 6, the positioning element 260 is a screw. The figure shows a sectional view of how the positioning element 260 positions the electrocautery rod 10 according to the present invention. A bore 280 is arranged radially (not shown) to the third hole 270, and the positioning element 260 is screwed into the bore 280 up to the electrocautery rod 10 in order to position the electrocautery rod 10 radially. In the embodiment according to Fig. 3, Fig. 4 and Fig. 6 The positioning element 260 also has a cover 262 located at an upper end of the bore 280 to prevent the positioning element 260 from shifting in a radial direction (not shown).

[0024] Fig. Figure 7 is a sectional drawing showing how all protruding fastening elements 130 according to the present invention are arranged according to a respective fastening unit 250. All fastening units are located on and around a side wall of the second hole 220 and according to the protruding fastening elements 130. Fig. 2 and Fig. 4. There is a pair of penetrating bores 136 on two sides of the protruding fastener 130, and the pair of penetrating bores 136 is located in the recess 132. All penetrating bores are in contact with the first hole 140 of the cylindrical part 120. In this design, all protruding fasteners 130 of the cylindrical part 120 are elastic enough to move elastically when an external force is applied.

[0025] When the rotatable positioning part 200 has been placed on the cylindrical part 120, the rotatable element 210 is positioned according to the protruding fastening elements 130. After the rotatable positioning part 200 has been rotated by the rotatable element 210, the protruding fastening element 130 is secured to any corresponding fastening unit 250. The fastening units 250 are preferably arcuate. In other embodiments, the fastening units 250 can also be semicircular, trapezoidal, or otherwise shaped.

[0026] Since the surface of all protruding fasteners 130 extends beyond the surface of the cylindrical part 120, the protruding fasteners 130 make contact with all fastening units 250. Therefore, the rotatable element 210 can rotate easily. According to Fig.7 The length (i.e., the arc length) of all fastening units 250 preferably corresponds to the length of all protruding fastening elements 130, such that all protruding fastening elements 130 are located on a corresponding fastening unit 250. When a surgeon then rotates the rotatable positioning part 200 with their finger, all protruding fastening elements 130 of the cylindrical part 120 are brought into elastic contact with the fastening units 250. This produces a quiet sound, which gives the surgeon a better sense of position and hand position during the operation.

[0027] Finally, the electrocautery rod 10 successively penetrates the third hole 270, the second hole 220, the fourth hole 290, and the first hole 140, so that the electrocautery rod 10 can be operated with the handle 110. Therefore, the electrocautery instrument 100 of the present invention simplifies the design of the conventional embodiment. Manufacturing costs can thus be reduced, and the device is suitable for single use.

[0028] It should be noted that the rotatable element 210 of the present embodiment of the invention preferably consists of a plurality of protruding areas. In other embodiments, the rotatable element 210 can also be a friction element with a pattern on its outer surface, an adjusting element with a ratchet or a gear, or another suitable element that can rotate the rotatable element 210 of the present invention in a suitable manner.

[0029] In summary, the electrocauterization instrument for endoscopic therapy according to the present invention achieves the stated objectives and eliminates the shortcomings of conventional embodiments. Reference symbol list 10 electrocautery wands 100 electrocauterization instruments 110 handle 120 Cylindrical part 122 Fastening element 124 flange 126 recess 128 chamfer angles 130 Protruding fastening element 132 recess 136 penetrating boreholes 140 First Hole 200 Rotating Positioning Part 210 Rotating element 220 Second Hole 222 Round Deflection Plate 230 clamp part 232 Outstanding arm 234 hooks 250 fastening units 260 Positioning part 262 Cover 270 Third Hole 280 through hole 290 Fourth Hole 292 base

Claims

[1] An electrocautery instrument for endoscopic therapy using an electrocautery rod (10), comprising: a handle (110) consisting of a cylindrical part (120), a fastening element (122) and at least one protruding fastening element (130), wherein the fastening element (122) and the protruding fastening element (130) are arranged on the cylindrical part (120) and the cylindrical part (120) further has a first hole (140) and a rotatable positioning part (200) enclosing the cylindrical part (120), the rotatable positioning part (200) further comprising a rotatable element (210), a second hole (220), at least one clamp part (230), and a plurality of fastening units (250); the rotatable element (210) is rotatably connected to the cylindrical part (120), the clamp part(s) (230) being located on a side wall of the second hole (220) and connecting to the fastening element (122); the fastening units (250) are each recessed into the side wall of the second hole (220), the rotatable element (210) being arranged corresponding to the protruding fastening element(s) (130);the rotatable element (210) serves to rotate the rotatable positioning part (200) so that at least one of the projecting fastening elements (130) is positioned on one of the corresponding fastening units (250) and the electrocautery rod (10) is guided through the second hole (220) and the first hole (140) in order to be able to be operated with the handle (110); characterized by , that the rotatable positioning part (200) further consists of a positioning element (260), a third hole (270) and a through-bore (280); the third hole (270) is connected to the second hole (220), the through-bore (280) is located on the rotatable positioning part (200) and is connected to the third hole (270), wherein the diameter of the third hole (270) is smaller than the diameter of the second hole (220) and the positioning element (260) is located radially towards the third hole (270) in the through-bore (280) in order to position the electrocautery rod (10) in the radial direction. [2] The electrocautery instrument according to claim 1, wherein a fourth hole (290) is located in the rotatable positioning part (200), the second hole (220) being arranged between the fourth hole (290) and the third hole (270); when the rotatable positioning part (200) encloses the cylindrical part (120), the cylindrical part successively penetrates the fourth hole (290) and the second hole (220), but not the [3] The electrocautery instrument according to claim 1 or 2, wherein the size of the diameter of the first hole (140) is between the size of the diameter of the second hole (220) and the size of the diameter of the third hole (270). [4] The electrocautery instrument according to any one of claims 1 to 3, wherein the positioning element (260) may be a screw, a bolt, a pin or a key. [5] The electrocautery instrument according to any one of claims 1 to 4, wherein the fastening element (122) further consists of a flange (124) and a recess (126), and a chamfer angle (128) is formed on one side of the flange (124), and the flange (124) is located adjacent to the recess (126). [6] The electrocautery instrument of claim 5, wherein the clamp member (230) extends over the flange (124) and the bevel angle (128) engages the recess (126). [7] The electrocautery instrument according to one of claims 1 to 6, wherein the rotatable positioning part (200) further forms a fourth hole (290) and a base (292), and the size of the diameter of the fourth hole (290) is larger than the size of the diameter of the second hole (220), and the base (292) is perpendicular to a side wall of the fourth hole (290), and the clamp part(s) (230) protrude into the fourth hole (290) perpendicular to the base (292) and engage with the fastening element (122). [8] The electrocautery instrument according to any one of claims 1 to 7, wherein the cylindrical member (120) further forms a recess (132) and the protruding fastener(s) (130) protrude from the recess (132) and a surface of at least one protruding fastener (130) protrudes above the surface of the cylindrical member (120). [9] The electrocautery instrument according to any one of claims 1 to 8, wherein a pair of penetrating holes (136) are formed in the recess (132), and the pair of penetrating holes (136) are respectively located on the two sides of the protruding fixing member (130) and in contact with the first hole (140). [10] The electrocautery instrument according to any one of claims 1 to 9, wherein at least one clamp member (230) has a projecting arm (232) and a hook (234), the hook (234) being located at one end of the projecting arm (232), the projecting arm (232) being elastic to engage the hook (234) with the fastener (122). [11] The electrocautery instrument according to any one of claims 1 to 10, wherein the plurality of fastening units (250) are each arranged side by side on and around the side wall of the inner hole (220) and the length of all fastening units (250) corresponds to the length of the protruding fastening elements (130). [12] The electrocautery instrument according to claim 11, wherein the shape of the plurality of fixing units (250) may be arcuate, semicircular or trapezoidal. [13] The electrocautery instrument according to any one of claims 1 to 12, wherein the rotatable member (210) has a plurality of protruding parts, a friction member, or an adjustment member.

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