Intubation device

Abstract

A cannula device (1) comprises a housing (11), a cannula (10), and a puncture device (17), wherein the cannula (10) is arranged on the housing (11), and in a state of use, the puncture device (17) is arranged on the housing (11) and comprises a puncture trocar (18) received in the cannula (10). The puncture trocar (18) is displaceable relative to the cannula (10) and comprises a trocar tip (180) which can be moved to protrude from the cannula (10) in a puncture direction (P) by displacing the puncture trocar (18) relative to the cannula (10), wherein the puncture device (17) can be removed from the housing (11) in a removal direction (A) opposite to the puncture direction (P). The protective element (15) is received in the housing (11) and comprises a connecting portion (150) arranged on the puncture cannula (18) and at least one protective leg (152, 153) pivotably connected to the connecting portion (150), wherein the puncture cannula (18) is configured to carry the protective element (15) when the puncture cannula (18) is removed from the housing (11) in the removal direction (A), and the at least one protective leg (152, 153) is configured to pivotally move relative to the connecting portion (150) to approach the cannula tip (180) when the protective element (15) is carried by the puncture cannula (18).

Description

Technical Field

[0001] The present invention relates to an intubation device.

[0002] This cannula device is used to provide a passage into a body cavity such as a visceral cavity (e.g., gastrointestinal tract). For example, this cannula device can be used for enteral feeding of a patient, and for this purpose, can be percutaneously inserted and placed in the patient's body cavity.

[0003] This cannula device comprises a housing, a cannula disposed on the housing, and a puncture device disposed on the housing in a state of use. The puncture device comprises a puncture trocar received in the cannula, the puncture trocar being displaceable relative to the cannula and comprising a trocar / trocar tip that can be moved relative to the cannula in the puncture direction so as to protrude from the cannula in the puncture direction. The puncture device can be removed from the housing in a removal direction opposite to the puncture direction.

[0004] With the help of such an intubation device, a passage can be provided on a body cavity to allow a tube to be placed in the body cavity to allow, for example, long-term enteral feeding of a patient. In order to provide a passage, in this article, the patient's skin is pierced with the help of a puncture device, and the intubation device is inserted together with the puncture device to approach the body cavity of interest, such as the patient's gastrointestinal tract. After the intubation device is inserted into the body cavity, the puncture device can be removed from the housing and the intubation tube, and a wire can be inserted through the intubation tube to enter the body cavity. With the help of a suitable grasping device inserted into the body cavity, for example, through the patient's esophagus, the wire can be grasped, on which the tube can be connected to the wire, and it can be moved into the body cavity by passing the wire through the intubation tube of the intubation device. In this way, the tube can be placed in the passage formed by the intubation device and can remain in the passage after the intubation device is removed.

[0005] During use of the intubation device, the cannula of the intubation device should be placed in a body cavity of interest, whereupon the puncture device including the puncture trocar should be removed from the housing and the cannula should be received thereon. This step of removing the puncture device may pose a safety risk because a user, such as a doctor or nurse, may be injured by the puncture trocar, which involves the risk of injury to the user and the risk of infection. Background Art

[0006] Intubation devices are well known in the art and use a protective member that is carried by the puncture trocar to cover the trocar tip of the puncture trocar when the puncture device is removed from the housing of the intubation device. Such intubation devices are known, for example, from EP 2 774 596 A1 and US 2004 / 078003 A1. Summary of the Invention

[0007] The object of the present invention is to provide an intubation device which allows the user to be protected, in particular during removal of the puncture device from the housing, wherein the intubation device should be reliable in use and easy and cost-effective in its manufacture.

[0008] This object is achieved by means of an intubation device comprising the features of the main solution of the present invention.

[0009] Therefore, the intubation device includes a protective element, which is received in the housing and includes a connecting portion and at least one protective leg, the connecting portion being arranged on the puncture trocar, the at least one protective leg being pivotally connected to the connecting portion, wherein the puncture trocar is configured to carry the protective element when the puncture trocar is removed from the housing in the removal direction, and the at least one protective leg is configured to be pivotally moved relative to the connecting portion to approach the trocar tip when the protective element is carried by the puncture trocar.

[0010] When the puncture device is removed from the housing, the puncture device automatically carries a protective element that covers and protects the trocar tip of the puncture trocar, thereby protecting the user from injury when the puncture device is removed from the housing. Since the protective element is carried by the puncture trocar when the puncture device is removed from the housing and the cannula, the user does not come into contact with the trocar tip of the puncture trocar and is therefore protected from injury by the puncture trocar.

[0011] The protective element herein comprises a connecting portion and at least one shield leg pivotally connected to the connecting portion. The connecting portion is configured to interact with the puncture trocar when the puncture trocar is removed from the housing, wherein during removal, the at least one shield leg pivotally moves relative to the connecting portion to access the trocar tip. Thus, when the puncture device is removed from the housing, the at least one shield leg moves to cover the trocar tip, shielding the trocar tip from the outside and preventing it from injuring the user after the puncture device is removed from the housing.

[0012] The protective element can be manufactured in an easy and cost-effective manner. For example, the protective element can be a single piece made of plastic material, at least one protective leg being integrally formed with the connecting portion and being elastically movable relative to the connecting portion when the puncture device is removed from the housing.

[0013] Once at least one of the protective legs is approached toward the trocar tip, the protective element is also carried by the puncture device and removed from the housing together with the puncture device, so that in the removed state the protective element is arranged on the trocar tip and covers and protects the trocar tip to provide protection at the trocar or the trocar tip.

[0014] In one embodiment, when the puncture device is in use, at least one shield leg is in a first pivot position. When the puncture device is in use, the protective element is received within the housing, with the at least one shield leg in a position away from the puncture trocar. When the puncture device is removed from the housing, and correspondingly, when the protective element is carried by the puncture trocar, the at least one shield leg moves from the first pivot position to a second pivot position, in which the at least one shield leg is positioned toward the trocar tip. Thus, in the second pivot position, the at least one shield leg is positioned toward the trocar tip and can cover and shield the trocar tip toward the outside, preventing the trocar tip from coming into contact with the user when the trocar tip is removed from the housing and, therefore, from causing harm to the user.

[0015] In one embodiment, the at least one guard leg comprises a half-shell portion (in cross section) extending along an arc about the removal direction and, in the second pivoted position, receiving the trocar tip therein. Thus, the at least one guard leg has the shape of a curved shell formed to cover and protect the trocar tip, such that in the second pivoted position, the at least one guard leg extends at least partially around the trocar tip and thereby provides protection by preventing the trocar tip from immediate contact with the user.

[0016] In one embodiment, in the second pivoted position, the at least one guard leg extends axially beyond the trocar tip. Thus, the trocar tip does not protrude axially from the guard element and the at least one guard leg formed thereon, but instead, the at least one guard leg protrudes beyond the trocar tip and can reach radially inwardly around the immediate tip of the puncture trocar to provide axial covering of the trocar tip.

[0017] In one embodiment, at least one of the protection legs includes a locking element for locking the at least one protection leg in the second pivot position. The locking element can, for example, be formed to provide a positive lock that is automatically established when the at least one protection leg is moved toward the second pivot position. Due to the locking, the at least one protection leg is securely held in the second pivot position, making it difficult for the protection element to be removed from the trocar tip and thus providing reliable protection at the trocar tip.

[0018] In one embodiment, the protective element includes two protective legs, each of which is pivotally connected to the connecting portion. The two protective legs can be arranged diametrically opposite each other at the connecting portion and can each be arranged away from the puncture trocar in a first pivot position. When the puncture trocar is removed from the housing, the protective legs are pivoted toward their second pivot position, wherein each protective leg can include a locking element, the locking elements of the protective elements being configured to interlock with each other when brought into proximity with each other. The locking elements can, for example, be configured to establish a positive-locking connection, wherein when the protective legs are pivoted to approach each other, the locking elements engage with each other, causing the protective legs to lock relative to each other and internally receive the trocar tip to provide protection at the trocar tip.

[0019] In one embodiment, the connecting portion is shaped as a ring forming an opening through which the puncture trocar extends. Thus, the connecting portion is placed on the puncture trocar and interacts with the puncture trocar so that when the puncture trocar is removed from the cannulation device, when the puncture device is removed from the housing, the connecting portion is carried along.

[0020] In one embodiment, the housing includes at least one guide portion, wherein the connecting portion is received on the at least one guide portion. The at least one guide portion is configured to act on the at least one shield leg when the protective element is carried by the puncture trocar during removal of the puncture device from the housing. Thus, by carrying the protective element, the at least one shield leg of the protective element interacts with one or more guide portions formed on the housing, which causes the at least one shield leg to pivot from a first pivot position toward a second pivot position, thereby positioning the at least one shield leg so that the trocar tip is covered by the at least one shield leg.

[0021] In one embodiment, at least one of the protective legs includes a rising ramp that interacts with at least one guide portion formed on the housing. When the protective element is carried, the protective leg, via its rising ramp, contacts the associated guide portion of the housing, causing the protective leg to pivot relative to the connecting portion of the protective element and thereby approach the trocar tip to cover and protect the trocar tip.

[0022] In one embodiment, the puncture trocar includes a carrying element configured to act on the connecting portion to carry the protective element during removal of the puncture device from the housing. The carrying element can, for example, be formed by a protrusion formed on the puncture trocar near the trocar tip. By means of the carrying element, the puncture trocar acts on the connecting portion of the protective element, causing the connecting portion and, therefore, the protective element to move together with the puncture trocar, in such a way that the at least one protective leg interacts with the housing to pivot the at least one protective leg from its first pivot position toward its second pivot position, in order to approach the trocar tip and, thereby, cover and protect the trocar tip.

[0023] In one embodiment, the cannula device comprises an actuation member movably arranged on the housing. The actuation member can be actuated to allow the puncture trocar to be displaced relative to the cannula.

[0024] In this context, in one embodiment, the actuating element may include at least one stop element that, in a locked state, engages with the puncture device and thereby blocks the puncture device relative to the housing. Thus, in the non-actuated state of the actuating element, the puncture device is fixedly blocked relative to the housing, such that the puncture trocar cannot move within the cannula. To allow movement of the puncture device, the actuating member may be actuated such that the at least one stop element is released from the puncture device, and the puncture device may be moved axially in a puncture direction, such that the puncture trocar protrudes axially from the cannula, so as to percutaneously puncture the patient's skin and insert the cannula device into the patient's body cavity of interest.

[0025] Likewise, the actuation member may be actuated to remove the lancing device from the housing, causing the protective element to be carried along to cover and shield the trocar tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The concept of the present invention will be described in more detail below with respect to the embodiments shown in the accompanying drawings.

[0027] Figure 1 An exploded view of an embodiment of an intubation device is shown;

[0028] Figure 2 shows a top view of the intubation device;

[0029] Figure 3 A side view of the intubation device is shown;

[0030] Figure 4 Shown along the Figure 2 A cross-sectional view of line AA shown in FIG;

[0031] Figure 5 Shown in an enlarged manner as Figure 4 Part Z shown in ;

[0032] Figure 6 Shown along the Figure 3 An enlarged cross-sectional view of line BB shown in ;

[0033] Figure 7 shows an enlarged view of the housing of the intubation device, the housing including the actuation member and the protective element;

[0034] Figure 8 shows a cross-sectional view of a housing with a puncture device received therein;

[0035] Figure 9 shows a cross-sectional view of a housing in which an actuating member is positioned;

[0036] Figure 10 shows another cross-sectional view of the housing;

[0037] Figure 11 A view showing a protective element;

[0038] Figure 12 A view showing a protective element arranged on a trocar tip of a puncture trocar of a puncture device;

[0039] Figure 13A shows a view of the guard element prior to pivoting the guard legs to cover the trocar tip;

[0040] Figure 13B shows a view of the protective element when the protective legs are pivoted to approach each other;

[0041] Figure 13C A protective element is shown wherein the protective legs are approached towards each other and locked relative to each other;

[0042] Figure 14A The intubation device is shown before entering the body cavity;

[0043] Figure 14B The intubation device is shown when an actuation member for activating the puncture device is actuated;

[0044] Figure 14C An intubation device is shown wherein a puncture device is moved to puncture the patient's skin;

[0045] Figure 14D shows the intubation device during removal of the puncture device; and

[0046] Figure 14E The cannulation device is shown with the puncture device removed. DETAILED DESCRIPTION

[0047] Figures 1 to 3 An embodiment of an intubation device 1 is shown, comprising a housing 11 and a cannula 10 received on the housing 11. The housing 11 comprises housing parts 12, 13, which are connected to one another and receive a puncture device 17. The puncture device 17, which has a puncture trocar 18, is placed in the cannula 10 in an initial state of use and comprises a head 19 arranged at the proximal end of the housing 11.

[0048] The cannula 10 forms a cannula tip 100 at the distal end, by means of which the cannula 10 can be percutaneously inserted into the skin of a patient in order to provide percutaneous access to a body cavity within the patient. Figure 4 As can be seen from the cross-sectional view, the puncture trocar 18 of the puncture device 17 is received in the inner channel 101 of the cannula 10, so that in the initial use state, the puncture trocar 18 with the trocar tip 180 is arranged in the cannula 10 and does not protrude axially from the cannula 10.

[0049] The head 19 of the puncture device 17 is arranged on the housing part 12 of the housing 11, and the cannula 10 is received in a receiving portion 120 formed on the housing part 12, as shown in FIG. Figure 5 The puncture trocar 18 is connected to the shaft 190 of the head 19, and the shaft 190 is guided between the guide walls 132 formed in the housing portion 13. The puncture trocar 18 extends from the shaft 190 through the opening in the housing portion 12 into the cannula 10 and is thereby slidably received within the cannula 10.

[0050] The housing 11 also houses an actuating member 14 for locking the puncture device 17 relative to the housing 11 in an initial state of use, such that the puncture device 17 is held relative to the housing 11 and cannot move axially relative to the housing 11. Consequently, the puncture trocar 18 is locked relative to the housing 11 and cannot be unintentionally moved relative to the cannula 10, so that the puncture trocar 18 does not accidentally protrude from the cannula tip 100 with its trocar tip 180.

[0051] Now refer to Figures 5 to 8 , the actuation member 14 is received in the opening 131 of the housing portion 13 of the housing 11 and is placed in the interior space 130 of the housing 11. The actuation member 14 can be actuated along the actuation direction B to push the actuation member 14 into the housing 13 in order to unlock the piercing device 17 so that the piercing device 17 becomes axially movable relative to the housing 11.

[0052] As from Figure 7 and reference Figure 6 and Figure 8 As can be seen from the view of FIG, the actuating member 14 comprises stop elements 140 in the shape of arms protruding from a body portion 142, each stop element 140 carrying an engagement nose 141 at its distal end relative to the body portion 142. In the initial state of use, as shown from Figure 6 It can be seen that the engagement nose 141 engages with a locking receptacle 191 formed on the shaft 190 of the head 19 of the piercing device 17 , so that the piercing device 17 is axially locked relative to the housing 11 by means of the actuating member 14 .

[0053] By actuating the actuating member 14, the stop element 140 is moved transversely to the shaft 190 of the head 19 of the puncturing device 17, so that the engaging nose 141 is disengaged from the locking receiving portion 191 formed on the shaft 190. As a result, the puncturing device 17 becomes free to move relative to the housing 11 in the puncturing direction P, so that the user can push the head 19 in order to move the puncturing trocar 18 relative to the cannula 10 so that the trocar tip 180 of the puncturing trocar 18 protrudes axially from the cannula tip 100 of the cannula 10 for puncturing the skin of the patient.

[0054] Now refer to Figure 9 The actuating member 14 is guided on the housing portion 13 of the housing 11 along an actuating direction B, which is arranged at a perpendicular angle relative to the puncturing P. In the actuating direction B, a guide element 143 is formed on the body portion 142 of the actuating member 14, and the guide element 143 is guided along a longitudinal guide 135 formed on the rear wall 134 of the housing portion 13. Due to the longitudinal guidance, tilting of the actuating member 14 during actuation is prevented, so that the actuating member 14 can be reliably actuated to disengage the stop element 140 from the shaft 190 and thereby unlock the puncturing device 17.

[0055] Now refer to it again Figure 7 In addition, a protective element 15 and an anti-air ventilation valve 16 (for preventing air from escaping from the body cavity during operation) are received in the housing 11.

[0056] As from Figure 7 and reference Figure 5 As can be seen from the view of FIG, the puncture cannula 18 of the puncture device 17 extends through the anti-air ventilation valve 16, sealing the transition portion between the housing portion 12 and the puncture cannula 18 in a fluid-tight manner so that air cannot leave through the housing 11 and the cannula 10.

[0057] The protective element 15 serves to provide protection when the puncture device 17 is removed from the housing 11 .

[0058] Now refer to Figures 10 to 12 The protection element 15 includes a connecting portion 150 in an annular shape, in which an opening 151 is formed. The connecting portion 150 is arranged on the puncture trocar 18 so that the puncture trocar 18 extends through the opening 151 formed in the connecting portion 150.

[0059] In this article, as Figure 10 It can be seen that the connecting portion 150 is received between the guide walls 132 formed in the housing portion 13 of the housing 11 , so that the protective element 15 can move relative to the housing 11 along a defined guide channel 133 formed in the housing 11 .

[0060] The puncture trocar 18 can be slidably moved relative to the protective element 15. The connecting portion 150 can also be slidably moved within the guide channel 133 formed between the guide walls 132, and the stopper portion 136 formed at the end of the guide wall 132, which prevents the connecting portion 150 from moving out of the guide channel 133 formed between the guide walls 132 in the puncture direction P, can be moved out of the guide channel 133 formed between the guide walls 132.

[0061] As from Figure 11 and Figure 12 As can be seen, in the embodiment shown, the protective element 15 comprises two protective legs 152, 153. The protective legs 152, 153 are here connected to the connecting portion 150 such that they can be elastically deformed relative to the connecting portion 150 for pivoting the protective legs 152, 153 relative to the connecting portion 150.

[0062] The protective element 15 in the embodiment shown is formed integrally in one piece, for example from a plastic material.

[0063] In the relaxed state, the protection legs 152, 153 adopt a position in which they are arranged at an angle relative to each other and are therefore displaced from the connecting portion 150 such that the protection legs 152, 153 are V-shaped, as seen from FIG. Figure 11 However, the guard legs 152, 153 can be pivoted relative to the connecting portion 150 so as to approach each other so that the guard legs 152, 153 can engage each other to receive the trocar tip 180 of the puncture trocar 18 therein, as shown in FIG. Figure 12 visible.

[0064] Each shielding leg 152 , 153 comprises a half-shell portion 158 , 159 having an arcuate shape when viewed in a cross section perpendicular to the puncturing direction P, so that the shielding legs 152 , 153 together form a receptacle for a trocar tip 180 .

[0065] At its distal end relative to the connecting portion 150 , each protection leg 152 , 153 comprises a locking element 154 , 155 , one locking element 154 being formed as a hook and the other locking element 155 being formed as a locking web, the locking elements 154 , 155 being configured to interact with one another to establish a form-locking connection for mutually locking the protection legs 152 , 153 relative to one another.

[0066] An ascending slope 156 is formed on the exterior of each half shell portion 158, 159 for interacting with an associated guide wall 132 formed in the housing 13. In addition, another ascending slope in a wedge shape is formed at the outer edge of the distal end of each protective leg 152, 153.

[0067] Now refer to 13A to 13C When the puncture device 17 is removed from the housing 11 along a removal direction A opposite to the puncture direction P, the rising inclined surfaces 156 on the outer sides of the half-shell portions 158, 159 of the protection legs 152, 153 come into contact with the front edges of the guide walls 132 formed in the housing portion 13 of the housing 11, thereby causing the protection legs 152, 153 to pivot inwardly to approach each other.

[0068] Here, when the puncture device 17 is removed from the housing 11 , a carrying element 181 in the shape of a protrusion formed on the puncture trocar 18 near the trocar tip 18 interacts with the connecting portion 150 of the protective element 15 extending circumferentially around the puncture trocar 18 , so that the protective element 15 is carried along with the puncture device 17 in the removal direction A. As the protective element 15 is carried, the protective legs 152 , 153 are pulled into the guide channel 133 formed between the guide walls 132 , and thus approach each other and are locked relative to each other by means of the locking elements 154 , 155 to cover and protect the trocar tip 180 .

[0069] 14A to 14E Potential modes of use of the intubation device 1 are illustrated.

[0070] In the initial use state, such as Figure 14A and corresponding to, for example, the delivery state of the cannula device 1, the actuation member 14 is non-actuated and thus locks the puncture device 17 relative to the housing 11. The puncture trocar 18 is received in the cannula 10, however does not protrude from the distal end of the cannula 10.

[0071] By actuating the actuating member 14 in the actuating direction B, as Figure 14B , the puncture device 17 is unlocked and can therefore be freely moved relative to the housing 11. Thus, the user can press the head 19 of the puncture device 17 and in this way can move the puncture device 17 in the puncture direction P, so that the puncture trocar 18 slides axially inside the cannula 10 and protrudes with its trocar tip 180 from the distal end of the cannula 10, as shown in FIG. Figure 14C In this state, the cannula device 1 can be used to percutaneously puncture the patient's skin so as to insert the cannula 10 into the patient's body cavity.

[0072] When inserted into a body cavity, the puncture device 17 should be removed from the housing 11 so that, for example, a wire can be inserted into the cannula 10 for placing the tube in the passage formed by the cannula device 1. For this purpose, Figure 14D and Figure 14E, the actuation member 14 remains unlocked and the puncture device 17 is pulled out of the housing 11 in a removal direction A opposite to the puncture direction P. During removal, the puncture cannula 18, having its carrying element 181 formed near the cannula tip 180, interacts with and carries with it the protective element 15 in the housing 11, which comes to rest at the cannula tip 180 once the puncture device 17 is removed from the housing 11 and thus covers and protects the cannula tip 180.

[0073] Since the protection element 15 is automatically carried and covers the trocar 180 , reliable protection and safeguarding are provided, greatly reducing the risk of injury and potential infection to the user.

[0074] The actuation member 14 may be resiliently biased relative to the housing 11 using a spring element such as a compression spring towards the non-actuated position.

[0075] The concept of the present invention is not limited to the embodiments described herein, but can be implemented in another way.

[0076] The housing as well as the cannula and puncture trocar may have shapes different from the embodiment shown in the figures.

[0077] For example, a cannula device of the type described herein may be used to provide access to a patient for long-term enteral feeding, but may also be used in various medical settings to provide access to a patient's body cavity.

[0078] Reference Signs List

[0079] 1. Puncture and intubation device

[0080] 10 Intubation

[0081] 100 cannula tip (distal end)

[0082] Channel 101

[0083] 11 Housing

[0084] 12 Shell part

[0085] 120 Reception Department

[0086] 13. Shell

[0087] 130 Space

[0088] 131 Opening

[0089] 132 Guide Wall

[0090] 133 Guidance Channel

[0091] 134 back wall

[0092] 135 longitudinal guide (web)

[0093] 136 stopper

[0094] 14 Actuating member

[0095] 140 stop element (locking arm)

[0096] 141 Joint nose

[0097] 142 body part

[0098] 143 guide element

[0099] 15 Protection components

[0100] 150 connecting part (ring element)

[0101] 151 Opening

[0102] 152, 153 Protective Legs

[0103] 154, 155 Locking elements

[0104] 156, 157 rising slope

[0105] 158, 159 half shell parts

[0106] 16 Anti-air ventilation valve

[0107] 17 Puncture device

[0108] 18 puncture trocar

[0109] 180 Trocar Tip

[0110] 181 bearing element (protrusion)

[0111] 19 Head

[0112] 190 axis

[0113] 191 Lock receiving portion

[0114] ARemove direction

[0115] B Actuation direction

[0116] P puncture direction

Claims

1. An intubation device (1), comprising: Housing (11), a cannula (10) arranged on the housing (11), and A puncture device (17), which is arranged on the housing (11) in a state of use and comprises a puncture trocar (18) received in the cannula (10), the puncture trocar (18) being displaceable relative to the cannula (10) and comprising a trocar tip (180), wherein the puncture trocar (18) is movable so as to protrude from the cannula (10) in the puncture direction (P) by displacing the puncture trocar (18) relative to the cannula (10) in the puncture direction (P), wherein the puncture device (17) can be removed from the housing (11) in a removal direction (A) opposite to the puncture direction (P), It is characterized by: A protective element (15) is received in the housing (11) and comprises a connecting portion (150) and two protective legs (152, 153), the connecting portion (150) being arranged on a puncture trocar (18), the two protective legs (152, 153) being pivotally connected to the connecting portion (150), wherein the puncture trocar (18) is configured to carry the protective element (15) when the puncture trocar (18) is removed from the housing (11) along the removal direction (A), and the two protective legs (152, 153) are configured to pivotally move relative to the connecting portion (150) to approach the trocar tip (180) when the protective element (15) is carried by the puncture trocar (18), wherein, in the use state of the puncture device (17), the two protective legs (152, 153) are located in a first pivot position, in which the two protective legs (152, 153) are arranged to deviate from the puncture trocar (18), and when the protective element (15) is carried by the puncture trocar (18), the two protective legs (152, 153) move from the first pivot position to a second pivot position, in which the two protective legs (152, 153) approach the trocar tip (180), wherein, in the second pivoted position, the two guard legs (152, 153) extend axially beyond the trocar tip (180), Each protection leg (152, 153) comprises a locking element (154, 155) for locking the two protection legs (152, 153) in the second pivot position.

2. The intubation device (1) according to claim 1, characterized in that Each guard leg (152, 153) comprises a half shell portion (158, 159) extending along an arc about the removal direction and receiving the trocar tip (180) therein in the second pivoted position.

3. The intubation device (1) according to claim 1, characterized in that The locking elements (154, 155) of the guard legs (152, 153) are configured to interlock with each other when brought toward each other.

4. The intubation device (1) according to one of claims 1 to 3, characterized in that The connecting portion (150) is shaped as a ring forming an opening (151) through which the puncture trocar (18) extends.

5. The intubation device (1) according to one of claims 1 to 3, characterized in that The housing (11) comprises at least one guide portion (132), wherein the connecting portion (150) is received on the at least one guide portion (132), the at least one guide portion (132) being configured to act on the two protective legs (152, 153) when the protective element (15) is carried by the puncture cannula (18) during removal of the puncture device (17) from the housing (11).

6. The intubation device (1) according to claim 5, characterized in that Each guard leg (152, 153) includes a rising ramp (156, 157) that interacts with the at least one guide portion (132).

7. Intubation device (1) according to one of claims 1 to 3, characterized in that The puncture trocar (18) comprises a carrying element (181) configured to act on the connecting portion (150) to carry the protective element (15) during removal of the puncture device (17) from the housing (11).

8. Intubation device (1) according to one of claims 1 to 3, characterized in that An actuating member (14) is arranged on the housing (11), the actuating member (14) being actuatable to allow displacement of the puncture trocar (18) relative to the cannula (10).

9. The intubation device (1) according to claim 8, characterized in that The actuating member (14) comprises at least one stop element (140) which, in a locked state, engages with the piercing device (17) to lock the piercing device (17) relative to the housing (11).

10. The intubation device (1) according to claim 9, characterized in that By actuating the actuation member (14), the at least one stop element (140) can be released from the piercing device (17).

11. The intubation device (1) according to one of claims 1 to 3, characterized in that The connecting portion (150) and the two protective legs (152, 153) are integrally formed as one piece.

Images