Multifunctional pneumoperitoneum needle

Abstract

The utility model discloses a multifunctional pneumoperitoneum needle, and belongs to the field of medical instruments. Comprising a handle which is provided with an air inlet; the needle sheath is arranged on the handle; the needle core is arranged in the needle sheath, and one end of the needle core extends out of the needle sheath and is provided with a side hole; the handle assembly is used for controlling the length of the needle sheath; the handle assembly comprises a control cavity formed in the handle, a control block is arranged in the control cavity in a sliding mode, the control block is arranged on the needle sheath in a sleeving mode and fixedly connected with the needle sheath, the handle is rotationally connected with a screw rod, one end of the screw rod is inserted into the control cavity, and one end of the screw rod penetrates through the control block and is in threaded connection with the control block. The multifunctional pneumoperitoneum needle has the beneficial effect that the length of the multifunctional pneumoperitoneum needle can be conveniently adjusted.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more specifically, to a multifunctional pneumoperitoneum needle. Background Technology

[0002] In laparoscopic surgery, a perforation device is essential, and the pneumoperitoneum needle plays a crucial role. Currently, the pneumoperitoneum needle has a relatively simple structure. However, for overweight or obese patients with thick abdominal walls, it is difficult for the pneumoperitoneum needle to enter the abdominal cavity, making perforation challenging. Different lengths of pneumoperitoneum needles are required for manipulation, and changing the pneumoperitoneum needle is cumbersome, affecting the surgeon's efficiency. Furthermore, it is currently impossible to observe whether the pneumoperitoneum needle has penetrated the peritoneum, requiring the surgeon to rely on experience to control it, which is inconvenient for the surgeon's subsequent work.

[0003] Therefore, a multifunctional pneumoperitoneum needle with easily adjustable length is needed. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a multifunctional pneumoperitoneum needle, comprising: a handle with an air inlet; a needle sheath disposed on the handle; a needle core disposed within the needle sheath, with one end extending out of the needle sheath and a side hole at the extended end; and a handle assembly for controlling the length of the needle sheath. The handle assembly includes: a control cavity formed within the handle, a control block slidably disposed within the control cavity, the control block being sleeved on the needle sheath and fixedly connected to it, and a screw rotatably connected to the handle, one end of which is inserted into the control cavity, the other end of which passes through the control block and is threadedly connected to it.

[0006] Furthermore, an inflation chamber is provided inside the handle, which is connected to the air inlet. A driven block is provided on the side of the control block near the inflation chamber. One end of the needle core extends to be fixedly connected to the driven block. A through hole is provided on the driven block, which is coaxially arranged with the needle core and communicates with the inner cavity of the needle core.

[0007] Furthermore, a spring is provided between the driven block and the control block, with both ends of the spring fixedly connected to the driven block and the control block, respectively.

[0008] Furthermore, a boss is formed at the transition position between the control chamber and the inflation chamber, and the control block has a portion that abuts against the boss for limiting the position of the control block.

[0009] Furthermore, the handle is provided with an observation window, and the control cavity has a guide groove on one side wall of the observation window, and the control block has a part that slides into the guide groove.

[0010] Furthermore, a baffle plate is fixedly installed on the control block, and a sliding groove is provided on the baffle plate. A mark block is provided on the driven block that slides in the sliding groove.

[0011] Furthermore, the baffle is slidably disposed within the guide cavity, and the dimensions of the needle sheath and the baffle in the direction of the needle sheath axis are smaller than the dimensions of the needle core and the marking block in the direction of the needle core axis.

[0012] Furthermore, the observation window is made of a transparent material.

[0013] Furthermore, the shield is made of an opaque material.

[0014] Furthermore, the marked blocks are either red or green.

[0015] The beneficial effect of this application is that it provides a multifunctional pneumoperitoneum needle with a convenient adjustable length. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the attached diagram:

[0019] Figure 1 This is an overall schematic diagram according to one embodiment of the present application;

[0020] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle.

[0022] Figure label:

[0023] 100. Handle; 101. Needle sheath; 102. Needle core; 103. Control block; 104. Screw; 105. Air inlet; 106. Control chamber; 107. Inflation chamber; 108. Driven block; 109. Spring; 110. Boss; 111. Observation window; 112. Guide groove; 113. Baffle plate; 114. Marking block; 115. Side hole. Detailed Implementation

[0024] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0025] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Reference Figure 1-3 A multifunctional pneumoperitoneum needle includes: a handle 100, a needle sheath 101, a needle core 102, a control block 103, and a screw 104. The handle 100 has an air inlet 105 for connecting to an external air source. Gas enters the needle core 102 through the air inlet 105, and then enters the patient's body through the needle core 102 to establish pneumoperitoneum. A control cavity 106 is provided inside the handle 100, and a control block 103 is slidably connected within the control cavity 106. The control block 103 is sleeved on the needle sheath 101 and fixedly connected to it. One end of the needle sheath 101 extends out of the control cavity 106 and has a pointed portion for inserting into the patient's abdominal cavity. A screw 104 is coaxially disposed inside the needle sheath 101, with one end extending out of the needle sheath 101, and the end extending out of the needle sheath 101 has a side hole 115. A screw 104 is rotatably connected to the handle 100, with one end inserted into the control cavity 106. One end of the screw 104 passes through the control block 103 and is threadedly connected to the control block 103. By rotating the screw 104, the control block 103 is moved, thereby adjusting the extension length of the needle sheath 101 to accommodate different abdominal wall thicknesses of patients.

[0030] An inflation chamber 107 is provided inside the handle 100, and the inflation chamber 107 is connected to the air inlet 105. A driven block 108 is provided on the side of the control block 103 near the inflation chamber 107. One end of the needle core 102 extends and is fixedly connected to the driven block 108. A through hole is provided on the driven block 108, so that the through hole is coaxially arranged with the needle core 102 and communicates with the inner cavity of the needle core 102. Gas enters into the inflation chamber 107 from the air inlet 105, and then is injected through the through hole and the needle core 102 from the inflation chamber 107.

[0031] A spring 109 is provided between the driven block 108 and the control block 103, with both ends of the spring 109 fixedly connected to the driven block 108 and the control block 103, respectively. When the needle is inserted into the patient's abdominal cavity, the needle core 102 retracts into the needle sheath 101 under pressure. At this time, the spring 109 is compressed, allowing the sharp needle sheath 101 to pierce the patient's abdominal wall. After entering the abdominal cavity, the needle core 102 extends out of the needle sheath 101 under the action of the spring 109, preventing the sharp needle sheath 101 from causing damage to the patient's internal organs.

[0032] A boss 110 is formed at the transition position between the control cavity 106 and the inflation cavity 107. The control block 103 has a portion that abuts against the boss 110 to limit the control block 103. When the needle sheath 101 is at its minimum extension, the control block 103 abuts against the boss 110 to limit the extension and prevent the needle core 102 from failing to retract. When the needle sheath 101 is at its maximum extension, the driven block 108 is located at the edge of the boss 110. The driven block 108 is always in contact with the inner wall of one side of the inflation cavity 107 to prevent air leakage from the gap between the inner wall of the inflation cavity 107 and the driven block 108.

[0033] The handle 100 is provided with an observation window 111, and the control cavity 106 has a guide groove 112 on one side wall of the observation window 111. The control block 103 has a part that slides into the guide groove 112. The position of the control block 103 can be observed through the observation window 111, and the guide groove 112 limits the rotation of the control block 103.

[0034] A baffle plate 113 is fixedly mounted on the control block 103. A sliding groove is formed on the baffle plate 113, and a marker block 114 is fixedly mounted on the driven block 108, slidingly engaging with the groove. Through the sliding groove and the driven block 108 conforming to the inner wall of the inflation chamber 107, relative rotation between the needle core 102 and the needle sheath 101 is prevented. Simultaneously, when one end of the needle core 102 extends out of the needle sheath 101 and the spring 109 is not under force, the baffle plate 113 blocks the marker block 114, making it invisible through the observation window 111. When the needle core 102 is retracted into the needle sheath 101 under force and the spring 109 is compressed, the marker block 114 moves out of the baffle plate 113's range, allowing it to be observed through the observation window 111. The shield 113 is positioned with the head end near the needle sheath 101 and the tail end away from the needle sheath 101. When the control block 103 abuts against the boss 110, the shield 113 does not cover the tail end, so that the marker block 114 can be observed through the observation window 111 when it is not covered by the shield 113.

[0035] The observation window 111 is made of transparent material, which can be set to transparent plastic material, and has scale lines in the direction from the head end to the tail end.

[0036] The baffle plate 113 is slidably disposed within the guide cavity. The dimensions of the needle sheath 101 and the baffle plate 113 in the axial direction of the needle sheath 101 are smaller than the dimensions of the needle core 102 and the marking block 114 in the axial direction of the needle core 102. When the spring 109 is not compressed, the tip of the needle core 102 extends out of the needle sheath 101. When the needle core 102 retracts into the needle sheath 101, the marking block 114 is not blocked by the baffle plate 113.

[0037] The shield 113 is made of an opaque material, and the color of the shield 113 is set to be different from that of the marker block 114, which can be set to black.

[0038] The marker block 114 is red or green. The marker block 114 may have scale lines of a different color than the marker block 114. If the marker block 114 is set to red, the scale lines are set to green.

[0039] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A multifunctional pneumoperitoneum needle, characterized in that, include: Handle (100), with an air inlet (105) provided on the handle (100); A needle sheath (101) is provided on the handle (100); The needle core (102) is coaxially disposed inside the needle sheath (101), with one end extending out of the needle sheath (101), and a side hole (115) is provided at the end extending out of the needle sheath (101); A handle (100) assembly for controlling the length of the needle sheath (101); The handle (100) assembly includes: A control cavity (106) is provided in the handle (100). A control block (103) is slidably disposed in the control cavity (106). The control block (103) is sleeved on the needle sheath (101) and fixedly connected to the needle sheath (101). A screw (104) is rotatably connected to the handle (100), with one end inserted into the control cavity (106). One end of the screw (104) passes through the control block (103) and is threadedly connected to the control block (103).

2. The multifunctional pneumoperitoneum needle according to claim 1, characterized in that: An inflation chamber (107) is provided inside the handle (100), and the inflation chamber (107) is connected to the air inlet (105). A driven block (108) is provided on the side of the control block (103) near the inflation chamber (107). One end of the needle core (102) extends to be fixedly connected to the driven block (108). A through hole is provided on the driven block (108), and the through hole is coaxially arranged with the needle core (102) and communicates with the inner cavity of the needle core (102).

3. A multifunctional pneumoperitoneum needle according to claim 2, characterized in that: A spring (109) is provided between the driven block (108) and the control block (103), and the two ends of the spring (109) are fixedly connected to the driven block (108) and the control block (103) respectively.

4. A multifunctional pneumoperitoneum needle according to claim 3, characterized in that: A boss (110) is formed at the transition position between the control cavity (106) and the inflation cavity (107). The control block (103) has a portion that abuts against the boss (110) for limiting the control block (103).

5. A multifunctional pneumoperitoneum needle according to claim 4, characterized in that: The handle (100) is provided with an observation window (111), and the control cavity (106) has a guide groove (112) on one side wall of the observation window (111). The control block (103) has a part that slides into the guide groove (112).

6. A multifunctional pneumoperitoneum needle according to claim 5, characterized in that: A baffle plate (113) is fixedly installed on the control block (103), and a sliding groove is provided on the baffle plate (113). A marker block (114) is provided on the driven block (108) to slide in the sliding groove.

7. A multifunctional pneumoperitoneum needle according to claim 6, characterized in that: The baffle plate (113) is slidably disposed in the guide cavity. The dimensions of the needle sheath (101) and the baffle plate (113) in the axial direction of the needle sheath (101) are smaller than the dimensions of the needle core (102) and the marking block (114) in the axial direction of the needle core (102).

8. A multifunctional pneumoperitoneum needle according to claim 7, characterized in that: The observation window (111) is made of transparent material.

9. A multifunctional pneumoperitoneum needle according to claim 7, characterized in that: The shield (113) is made of an opaque material.

10. A multifunctional pneumoperitoneum needle according to claim 7, characterized in that: The marker block (114) is red or green.

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