An unlocking structure, a cannula assembly and a trocar that can be unlocked with one hand

Abstract

The present invention provides an unlocking structure that can be unlocked with one hand, including a limit column, a toggle table and a locking table arranged on a sealing seat of a sealing body component; a locking groove and an elastic release button are arranged on a duckbill cover of a sleeve component, the release button includes a limit table, a button and an unlocking block, and a limit table slot and a limit table slide are arranged on the limit table; there is a gap between the limit table and the button and the unlocking block through the limit column, and the limit column can enter the limit table slot along the limit table slide to form a locked state, and can also be separated from the limit table slot and return to the limit table slide under the push of the unlocking block to form an unlocked state. The present invention also provides a sleeve assembly and a puncture device that can be unlocked with one hand. The present invention adopts an elastic release button and a toggle table, and the user can use the thumb to press the release button and the index finger to toggle the toggle table when holding the sleeve component in one hand to unlock the sleeve assembly; the release button has a simple structure and low manufacturing and installation costs.

Description

Technical Field

[0001] The present invention belongs to the field of minimally invasive surgical instruments and is a detachable sleeve assembly, in particular to an unlocking structure capable of being unlocked by one hand, a sleeve assembly and a puncture device. Background Art

[0002] A puncture device is often used in existing minimally invasive surgeries. The puncture device is usually composed of an obstruction device assembly, a sealing body component and a sleeve component. For example, a puncture device disclosed in US20060264992A1 includes an obstruction device assembly, a sealing body component and a sleeve component. In addition, CN200410092156.3 also discloses a puncture device of a similar type. When puncturing, the obstruction device of the prior art is inserted into the sleeve component (composed of the sealing body component and the sleeve component) and used as a whole. After the insertion into the abdomen of the human body is completed, the obstruction device is taken out, and then the surgical instrument is operated through the sleeve component. When necessary, the sealing body component needs to be released from the sleeve component. The method of releasing the sealing body component in the prior art is generally that the doctor holds the sleeve component with one hand and twists the sealing body component with the other hand, and then the sealing body component is unlocked, and then other surgical operations are performed. The release process is difficult to achieve the doctor's one-handed operation.

[0003] In order to solve the problems existing in the above-mentioned trocar, Chinese patent CN209789968U proposes a lock ring structure that can be unlocked by pressing with one hand. The lock ring structure is applied to the trocar. During use, the doctor holds the sleeve component with one hand, and then presses the handle downward with the thumb to separate the sealing body component from the sleeve component, thereby completing the unlocking of the sleeve assembly. However, the prior art still has the following problems: 1. During the unlocking process of the sleeve assembly, only the thumb is in action, and the button assembly needs to be pressed down and the sealing body component needs to be rotated. This requires that the doctor using the sleeve assembly must have a large enough thumb pressure to unlock the sleeve assembly. Doctors with insufficient thumb pressure have difficulty completing the unlocking operation in actual operation; 2. The button assembly is relatively complex, which makes the cost during manufacturing and assembly high. Summary of the invention

[0004] In view of the above problems existing in the prior art, the purpose of the present invention is to provide an unlocking structure that can be unlocked with one hand, by which the sealing body component and the sleeve component of the puncture device can be quickly unlocked with one hand through the user's thumb and other fingers squeezing and pressing force.

[0005] The technical solution of the present invention is: an unlocking structure capable of unlocking with one hand, comprising:

[0006] A limiting column, a shifting platform and a positioning platform are arranged on a sealing seat of the sealing body component;

[0007] A clamping groove and an elastic release button are provided on the duckbill cover of the sleeve component. The release button includes a limiting platform, a button, and an unlocking block. A limiting platform clamping groove and a limiting platform slideway are provided on the limiting platform, and the unlocking block is inclined on the button.

[0008] There is a gap between the limiting platform and the button and the unlocking block through a limiting post. The limiting post can enter the limiting platform clamping groove along the limiting platform slideway to form a locked state of the seal body component and the sleeve component, and can also be disengaged from the limiting platform clamping groove and return to the limiting platform slideway under the pushing of the unlocking block to form an unlocked state of the seal body component and the sleeve component.

[0009] The clamping platform cooperates with the clamping groove. When the seal body component and the sleeve component are in the locked state, the clamping platform enters the clamping groove clamping groove of the clamping groove; when the seal body component and the sleeve component are in the unlocked state, the clamping platform disengages from the clamping groove clamping groove of the clamping groove.

[0010] Further, there are 3 clamping platforms, which are respectively arranged on the inner side surface of the lower inner hole of the seal seat; there are 3 clamping grooves, which are respectively arranged on the outer side surface of the upper ring of the duckbill cover; the lower inner hole of the seal seat matches the upper ring of the duckbill cover, and each clamping platform has a corresponding clamping groove.

[0011] Further, a clamping groove clamping groove for clamping the limiting post is provided at the bottom of each clamping groove.

[0012] Further, the release button includes a limiting platform, a button, an unlocking block, an elastic beam, and a positioning sleeve. The limiting platform, the button, and the unlocking block are arranged in the middle of the elastic beam, and the two positioning sleeves are respectively arranged at both ends of the elastic beam; the limiting platform is a "human"-shaped convex platform, and its side surface has an adjacent limiting platform clamping groove and a limiting platform slideway.

[0013] Further, the limiting platform, the button, the unlocking block, the elastic beam, and the positioning sleeve of the release button are integrally made.

[0014] Further, the material of the release button is plastic.

[0015] Another object of the present invention is to provide a sleeve assembly that can be unlocked with one hand, which includes a seal body component and a sleeve component. The lower inner hole of the seal body component can be sleeved on the outer side surface of the upper ring of the sleeve component, and the above-mentioned unlocking structure that can be unlocked with one hand is provided on the seal body component and the sleeve component.

[0016] Another object of the present invention is to provide a puncture device that can be unlocked with one hand, which includes an obturator assembly, a seal body component, and a sleeve component. The lower inner hole of the seal body component can be sleeved on the outer side surface of the upper ring of the sleeve component, and the above-mentioned unlocking structure that can be unlocked with one hand is provided on the seal body component and the sleeve component.

[0017] Advantages of the present invention: 1. Due to the adoption of an elastic release button and a toggle platform, when the user holds the sleeve component with one hand, the user can relatively pinch and press the release button with the thumb and other fingers to unlock the sleeve assembly, and separate the sealing body component from the sleeve component by toggling with the index finger. Both the thumb and the index finger are utilized, and the thumb force required for unlocking is small, reducing the burden on the user. 2. The unlocking block on the button can push the limit post out of the limit table card slot to the limit table slideway, and the unlocking of the sealing body component and the sleeve component can be achieved without toggling with the index finger. 3. The structure of the release button is simple, and the manufacturing and installation costs are low. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the sealing body component of an embodiment of the unlocking structure that can be unlocked with one hand according to the present invention.

[0019] Figure 2 It is a schematic structural diagram of the sleeve component of an embodiment of the unlocking structure that can be unlocked with one hand according to the present invention.

[0020] Figure 3 It is a schematic structural diagram of the release button of an embodiment of the unlocking structure that can be unlocked with one hand according to the present invention.

[0021] Figure 4 It is a schematic structural diagram of a puncture device of an embodiment that can be unlocked with one hand according to the present invention.

[0022] Wherein: 10 - blocker assembly, 20 - sealing body component, 21 - sealing cover, 22 - sealing seat, 221 - limit post, 222 - toggle platform, 223 - clamping platform, 30 - sleeve component, 31 - sleeve, 32 - duckbill cover, 321 - clamping groove, 3211 - slideway, 3212 - clamping groove card slot, 33 - release button, 331 - limit table, 3311 - limit table card slot, 3312 - limit table slideway, 3313 - highest point, 332 - button, 333 - unlocking block, 3331 - unlocking slideway, 334 - elastic beam, 335 - positioning sleeve. Detailed Embodiments

[0023] The following further describes the unlocking structure, sleeve assembly and puncture device that can be unlocked with one hand according to the present invention in conjunction with the drawings.

[0024] Figure 1The structural schematic diagram of the sealing body component 20 of an embodiment of the unlocking structure that can be unlocked with one hand of the present invention is shown in FIG. The sealing body component 20 includes an upper sealing cover 21 and a lower sealing seat 22, the sealing cover 21 and the sealing seat 22 are tightly connected as a whole, and a toggle platform 222 is provided on the lower outer surface of the sealing seat 22, and its shape is suitable for being pushed by the user's index finger, and can be a semi-cylindrical shape, a semi-prism shape, a triangular cone shape or other protruding shapes. The lower inner surface of the sealing seat 22 forms a hollow inner hole, and the inner hole wall near the lower edge of the sealing seat 22 is evenly provided with more than one, preferably three, clamping platforms 223, which are used to clamp or even lock the sealing body component 20 on the sleeve component 30. A limiting column 221 extending from the lower edge of the sealing seat 22 is also provided on the inner hole wall, which is used to lock the sealing body component 20 on the sleeve component 30 or unlock it from the sleeve component 30.

[0025] Figure 2 It is a structural schematic diagram of a sleeve component 30 of an embodiment of an unlocking structure that can be unlocked with one hand of the present invention. The sleeve component 30 includes a lower slender threaded tube, an upper sleeve 31 and a top duckbill cover 32. A circular ring is arranged on the upper part of the duckbill cover 32, and more than one, preferably three, retaining grooves 321 are evenly arranged on the outer circumferential surface of the circular ring. The retaining groove 321 includes a slide 3211 and a retaining groove retaining groove 3212. The slide 3211 is used to accommodate a limiting column 221 on the sealing seat 22 and provide a channel for the limiting column 221 to enter the retaining groove retaining groove 3212; the retaining groove retaining groove 3212 is arranged at the bottom of the slide 3211.

[0026] The lower outer surface of the duckbill cover 32 has a notch for mounting the release button 33 ; two positioning posts (not shown) are arranged inside the notch for cooperating with the two positioning sleeves on the release button 33 .

[0027] like Figure 3 , which is a schematic diagram of a release button 33 of an embodiment of an unlocking structure capable of one-hand unlocking of the present invention, wherein the release button 33 comprises a limit platform 331, a button 332, an unlocking block 333, an elastic beam 334 and a positioning sleeve 335. The limit platform 331, the button 332 and the unlocking block 333 are arranged in the middle of the elastic beam 334, and two positioning sleeves 335 are arranged at both ends of the elastic beam 334 respectively; the limit platform 331 is a "human" shaped boss, and its side surface has an adjacent limit platform slot 3311 and a limit platform slideway 3312. There is an arc transition between the limit platform slot 3311 and the limit platform slideway 3312, and a highest point 3313 is provided.

[0028] The release button 33 is installed in the notch on the lower outer surface of the duckbill cover 32. The positioning sleeves 335 on both sides of the release button 33 are respectively sleeved onto two positioning posts (not shown) in the notch. In order to avoid the positioning sleeve 335 occupying too much volume, the positioning sleeve 334 can be made into a split truncated cylindrical shape. Additionally, in order to allow the elastic release button 33 to have a deformation space in the notch of the duckbill cover 32, the size of the positioning sleeve 335 is slightly larger than the size of the positioning post. For example, the size difference is between 0.5 mm and 2 mm.

[0029] The limit platform 331, button 332, unlocking block 333, elastic beam 334 and positioning sleeve 335 of the release button 33 can be a combination of multiple discrete parts or can be integrally manufactured, preferably by plastic mold casting.

[0030] The present invention also provides a cannula assembly that can be unlocked with one hand, which includes a seal body component 20 and a cannula component 30. The lower inner hole of the seal body component 20 can be sleeved on the outer side surface of the upper ring of the cannula component 30, and an unlocking structure that can be unlocked with one hand is provided on the seal body component 20 and the cannula component 30.

[0031] As Figure 4 shown, a trocar that can be unlocked with one hand provided by the present invention includes an obturator assembly 10, a seal body component 20 and a cannula component 30. The lower inner hole of the seal body component 20 can be sleeved on the outer side surface of the upper ring of the cannula component 30, and an unlocking structure that can be unlocked with one hand is provided on the seal body component 20 and the cannula component 30.

[0032] A relatively typical implementation process of the unlocking structure that can be unlocked with one hand in the present invention is described as follows:

[0033] 1. Locking of the cannula component and the seal body component: Align the three positioning platforms 223 of the seal seat 22 with the slideways 3211 of the three positioning slots 321 of the duckbill cover 32 and place the duckbill cover 32. At this time, the limit post 221 is in close contact with the limit platform slideway 3312; then rotate the seal seat 22 clockwise so that the positioning platform 223 snaps into the positioning slot card slot 3212; at the same time, the limit post 221 presses against the limit platform slideway 3312, causing the release button 33 to be deformed by force and move inward until the limit post 221 exceeds the highest point 3313 of the limit platform 331; at this time, the extrusion force on the release button 33 disappears and it rebounds to its original position, causing the limit post 221 to snap into the limit platform card slot 3311, and the locking of the cannula component 30 and the seal body component 20 is completed.

[0034] 2. Unlocking the sleeve component and the sealing body component: hold the sleeve assembly 30 with one hand, and press the button 332 of the release button 33 inward with the thumb to make the release button 33 move inward until the highest point 3313 of the limit platform exceeds the limit column 221, at which time the limit platform 331 is disengaged from the limit column 221; when pressing the button 332 of the release button 33, the unlocking slide 3331 of the unlocking block 333 will squeeze the limit column 221, so that the sealing seat 22 has a counterclockwise rotation movement, increasing the force of the limit column 221 to rotate over the highest point 3313 of the limit platform, thereby making the 221 limit column and the limit platform 331 disengage faster; then use the index finger to turn the toggle table 222 counterclockwise to make the sealing seat 22 rotate counterclockwise until the positioning table 223 is completely disengaged from the positioning groove 3212, at which time the sleeve component 30 and the sealing body component 20 are completely unlocked.

[0035] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Therefore, the scope of protection of the present invention should be subject to the scope of protection of the claims.

Claims

1. An unlocking structure capable of being unlocked with one hand, characterized in that, Comprising: A limit post (221), a toggle table (222) and a clamping table (223) arranged on the sealing seat (22) of the sealing body component (20); A clamping groove (321) and an elastic release button (33) arranged on the duckbill cover (32) of the sleeve component (30). The release button (33) includes a limit table (331), a button (332), an unlocking block (333), an elastic beam (334) and a positioning sleeve (335). The limit table (331), the button (332) and the unlocking block (333) are arranged in the middle of the elastic beam (334). The two positioning sleeves (335) are respectively arranged at both ends of the elastic beam (334). The limit table (331) is a "human"-shaped convex platform, and its side surface has an adjacent limit table card slot (3311) and a limit table slideway (3312); The unlocking block (333) is inclinedly arranged on the button (332); There is a gap passing through the limit post (221) between the limit table (331) and the button (332) and the unlocking block (333). The limit post (221) can enter the limit table card slot (3311) along the limit table slideway (3312) to form a locked state of the sealing body component (20) and the sleeve component (30), and can also be disengaged from the limit table card slot (3311) and return to the limit table slideway (3312) under the push of the unlocking block (333) to form an unlocked state of the sealing body component (20) and the sleeve component (30); When pressing the button (332) of the release button (33), the unlocking slideway (3331) of the unlocking block (333) will squeeze the limit post (221), causing the sealing seat (22) to rotate counterclockwise, increasing the force for the limit post (221) to turn over the highest point (3313) of the limit table, so that the limit post (221) and the limit table (331) can be disengaged faster.

2. The unlocking structure capable of being unlocked with one hand according to claim 1, wherein There are 3 clamping tables (223), which are respectively arranged on the inner side surface of the inner hole at the lower part of the sealing seat (22); There are 3 clamping grooves (321), which are respectively arranged on the outer side surface of the upper ring of the duckbill cover (32); The inner hole at the lower part of the sealing seat (22) matches the upper ring of the duckbill cover (32), and each clamping table (223) has a corresponding clamping groove (321).

3. The unlocking structure capable of being unlocked with one hand according to claim 2, wherein A clamping groove card slot (3212) for clamping the clamping table (223) is arranged at the bottom of each clamping groove (321).

4. The unlocking structure capable of being unlocked with one hand according to any one of claims 1-3, characterized in that, The limit table (331), the button (332), the unlocking block (333), the elastic beam (334) and the positioning sleeve (335) of the release button (33) are integrally made.

5. The unlocking structure capable of being unlocked with one hand according to any one of claims 1-3, characterized in that, The release button (33) is made of plastic.

6. A sleeve assembly capable of being unlocked with one hand, characterized in that, Comprising a sealing body component (20) and a sleeve component (30), the inner hole at the lower part of the sealing body component (20) can be sleeved on the outer side surface of the upper ring of the sleeve component (30), and an unlocking structure capable of being unlocked with one hand as described in any one of claims 1-5 is arranged on the sealing body component (20) and the sleeve component (30).

7. A puncture device capable of being unlocked with one hand, characterized in that, It includes a blocker component (10), a seal body component (20) and a sleeve component (30). The lower inner hole of the seal body component (20) can be sleeved on the outer side surface of the upper ring of the sleeve component (30). An unlocking structure capable of being unlocked with one hand as described in any one of claims 1-5 is provided on the seal body component (20) and the sleeve component (30).

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